How to build Pentium i3 - Dell Vostro 1510 Laptop

No, The 671T has an LGA775 socket and the I3 processor needs (depending on generation) either a LGA1150, 1155, or 1156 socket.
The 671T can support Core 2 Duo/Pentium D/Pentium 4/Celeron D processors that use the LGA775 socket.

The Intel website has details of all of the current CPU's and many of the older ones as well. ARK Your Source for Intel Product Information

Please specify what you mean by "building up"?

it is unlikely but without more detailed information on what computer / CPU / motherboard you have no-one can say for sure

on the pentium pc go to key board manufacturer site and download the drivers

Each is a different CPU socket set. Meaning a different motherboard, meaning a different computer for each.

There's two main differences between them that i can think off the top of my head.
1) The speed at which the processor works (where i5 works faster than i3)2) The number of cores it has.
Cores are like little computers inside the computer itself. The i3 has 2, while the i5 usually has 4. usually the more cores a computer has the better it is at doing background processes.

No, You can look at your Motherboards specs and usually it will give you the CPU options. If you have never changed a CPU before it takes a bit of research as to what is compatible with your system/Motherboard. The specs I found say you have a Pentium Dual-Core B950 3.4GHz., not to shabby, and a different socket . I don't see the amount of DDR3 Memory you have, but that would be a easy upgrade.

No. Not the one listed above (socket LGA 1156) You need to look for a mobile CPU (possibly mobile 479). They differ physically and architecturally. Even then you need to establish that the CPU is removable and verify BIOS has support for upgraded chip. Talk to your local repair shop for finale decision.

Hi!

Sorry you can't, intel pentium P series has different socket than Core i3 series.
And also, notebook is lowcost build exactly for the slower processor, putting there stronger processor will produce more heat, and possible overheating.