A friend has a 133-p4-nf51-ax motherboard that has 3 capcitors blown. the only writing on the cap is "FZ5A 1500 6.3V" Is there a way to find the capacitance?

probably a faulty lead
One bad/faulty lead can cause a computer with lots of problems
replace all the leads that attach to your hard drive including electrical extensions + IDE,SATA the ones that attach from your motherboard to hard drive
make sure all leads that are attached to your drives dvd\cd 3 1/2 inch floppy have secure connections and are not faulty or just replace them they are probably old and faulty ?
hope this helps

You can if you have an IDE connector on that motherboard.

even if the switch is capable of doing 1000 the network card must also be able to handle the speed and from what you are saying it is not capable of 1000 only 100

this is what asus says:

Latest P4 CPU Support
The latest P4S533-E motherboard supports Socket 478 Intel® P4 processors, which utilize the most advanced 0.13um process technology to provide frequencies up to 2.53GHz

forum topic: http://www.evga.com/forums/tm.aspx?high=&m=63702&mpage=1#65116
direct link to bios: ftp://ftp.evga.com/BIOS/NF41_E61.exe

The c222, c237, and c238, are motherboard manufacturer identifiers, for Capacitor 222, Capacitor 237, and Capacitor 238.
I don't know either, only the mobo manufacturer does.

BUT, I DO KNOW how you can identify the Microfarads, and voltage for each one of these Electrolytic Capacitors! There are many Electrolytic Capacitor manufacturers for electronic components, but each has their own identifying code. Some are easier than others to read their code.

How to identify Japanese Electrolytic Capacitors,
http://www.hardwaresecrets.com/article/595
[Hardwaresecrets.com]
Page 2 and 3 get more to the direct matter of reading the markings for Japanese Electrolytic Capacitors. Page 4 deals with Chinese and Taiwanese Electrolytic Capacitors.

Also want to include this,
How to Desolder Components;
http://www.hardwaresecrets.com/article/164

From me:
1.I advise using a 40 watt pencil tip soldering iron. use the damp sponge frequently also. Keep the tip clean, and tinned. [I use a soldering station now]

2.I grab the capacitor with my fingers, board turned over, and put slight pulling pressure mostly on one lead. Heat one lead, try to pull up just a little, then heat the other lead. Pull up just a little.
Keep going back, and forth pulling the leads out a little at a time. You don't want to keep the soldering tip there too long, or you'll risk burning the board, so don't try taking the 'Cap' out all at once.

Once the 'Cap' is removed, clean the motherboard area. You want a clean circuit trace area, for that rosin solder to adhere to. I use cotton balls, and Isopropyl Alcohol. Try to find the 91%, (Percent), alcohol. (Walmart)

3.You HAVE to match the voltage! You ->can 'fudge' the capacitance a little. (Microfarad)

Example: If you have a 16v, (16 volt), capacitor that is 330μF, you can use a 16v 430μF in it's place. (μF stands for Microfarad)
(Check Radio Shack, and online)

your memory freq. must match the jumper setting.and make sure processor is 133 mhz. compatable

You can download the nforce4 chipset drivers directly from nvidia.
http://www.nvidia.com/object/nforce_nf4_winxp_6.39

I had the same mobo, same problem and this worked fine.

Firstly make sure that your BIOS doesn't have a configuration/setting for larger RAM installed and doesn't have any RAM paging configurations that need setting.
If Kingston tech support couldn't solve this, we can presume that the memory sticks and the motherboard memory addressing is good. To solve this you need to look for an application post-startup that is hijacking your CPU. It's then likely that you have an older application that when it addresses more than 2 gigs gets thrown into an endless loop and hogs your system. The following will identify and help you eliminate that application.
With your 2 gigs installed, do the following.
Click Start>Run and type in "msconfig". This runs the configuration utility that shows your startup programs and services. Select the "Diagnostic Startp" option , then click "Apply" and follow the restart instructions. When your system reboots select "cancel" when asked to restore the settings. This will keep these settings through the next steps. Make sure that your system works well in this diagnostic mode with the 2 Gigs. All those burdensome background running applications that sap your system resources will be eliminated (temporarily) and bare Windows can run unencumbered without being dragged down. Shut down your system.
Install the remaining 2 gigs. Reboot and see if the system still maxes out at 100% (make sure you leave it for a while to give it a chance to settle down).
Try your issue again. If this time it operates as normal without the system being maxxed out, you'll know that at least one of those startup applications is the culprit. Running msconfig again will allow you to restore the Normal Startup, and the Startup tab will allow you to remove selectively that application that is causing the issue.  
One way to identify which one is the culprit is to restart normally (select the Normal Start option in msconfig and reboot) and once back up, do a ctrl-alt-del to bring up the Task Manager. Click the "Processes" tab and then click the heading "Mem Usage". This will sort running processes by how much memory resources they consume.  The memory hogs may not be the one giving you the problem, but it's likely that a heavy memory/resources consumer is also sapping the CPU cycles needed to operate normally. Make a note of the top heavy memory users (print a screenshot) and use this list to eliminate any that are also on the startup list back in msconfig.  
Don't use the "End Process" button in the Task Manager to simply stop them, as you'll likely stop one that is critical to Windows functionality. Msconfig's Startup list just shows the ones that get started at Windows boot up and can be eliminated without crippling Windows - much safer.  
Use your memory hog list to start eliminating, one at a time, the offending applications from the startup list until the issues is resolved. Its a little tedious, but helps clean up your system in the process.  
Hope this helps, and please rate my answer.

see this official cpu support for your board, you can go upto a 2.8ghz northwood P4 cpu http://global.msi.com.tw/index.php?func=prodcpusupport&prod_no=299&maincat_no=1#menu