Quite probably, the drivers for your External Maxtor drive are ALREADY included in Win XP, that is why you don';t see a driver download for them in the Maxtor website. This is quite common.
1) Try this first
SHUTDOWN your computer (not hibernate, not restart, not standby). Unplug the hard drive from the USB port. Restart your computer. After Windows XP loads COMPLETELY, plug the Maxtor to an USB port and wait at least 1 minute. Go to "My Computer" and check if the drive is there. If it is not, open the "Computer Management" (START MENU -> SETTING -> CONTROL PANEL -> ADMINISTRATIVE TOOLS -> COMPUTER MANAGEMENT). Click on the "DISK MANAGEMENT" icon. See if the Maxtor drive is there. If it is not, there is a communication problem between your computer and the Maxtor drive.
2) Check these too:
Is the light on on the front of the drive? Maxtor Personal Storage drives have a green light on the front of the drive that, when lit, indicate that the drive is getting power. Maxtor OneTouch drives have a light on the OneTouch button that, when lit, indicates the drive is getting power.
Is the drive connected to the power adapter? If the light is not on, make sure the drive is connected to the power adapter and the power adapter is connected to an electric outlet.
Is the power adapter functioning properly? Make sure the power adapter is functioning properly. The power adapter that comes with the Maxtor OneTouch drives has a green indicator light which should be on once the adapter is connected to an electric outlet. If this green light is not on, there may be a problem with the power adapter. If the green light on the power adapter starts blinking once you connect your external drive to the adapter, this can indicate a physical problem with the hard drive. If so, please contact
Seagate Support for further troubleshooting assistance.
Is the power switch on? All OneTouch drives (except for the OneTouch III Mini Edition) have a power switch on the back of the drive. Make sure this switch is in the on position, which is indicated on the switch by the number 1.
If this is a OneTouch III Mini drive, is it getting enough power? If you have a OneTouch III Mini Edition that isn't powering up properly, you may need to connect both ends of the USB Y-cable to two USB ports on your computer. Because the OneTouch III Mini Edition is powered via USB, it may need a second USB connection which should provide it with enough power to function properly.
Is your Seagate or Maxtor external drive connected to your computer through the provided firewire or USB cable? If it is, but isn't recognized, you may want to try connecting the USB or firewire cable to a different port on the computer. If you are connecting the drive to an external USB hub, try connecting it directly to the USB port built into the computer. If this is a desktop system, it is recommended that you use a USB port on the rear of your computer, as front USB ports may prevent your external drive from functioning properly.
Does your drive appear in My Computer? When your drive is connected to your computer and configured properly, it should appear in My Computer as one or more additional drive letters. The image below shows a 200GB external drive that appears as drive letter E:.
3) Please go here:
http://www.seagate.com/ww/v/index.jsp?locale=en-US&name=personal-storage-downloads&vgnextoid=ec54b7f90c104210VgnVCM1000001a48090aRCRD
and download the "Personal Storage 3100 Diagnostic Utility" and "SeaTools". Install both and run them. Both programs assume that the drive is connected to the computer. The first program should tell you if there is a problem with your drive. the 2nd one can also diagnoze any problem with the drive.
4) If nothing works and the Maxtor is corrupted, you may want to try to see what data you can salvage from it. I have personally used "Stellar Phoenix Data Recovery" when my hard drive died sometime ago and I was able to get ALL my files back. Then, I just re-formatted my hard drive and re-installed everything... but I didn't lose any files.
Please, report back if you need further assitance.