Hi, I want to boot my client from network ,for this I should activate PXE NIC, Can anyone tell me how can I activate PEX in my system?
Should I do this from Bios?

Yes, you enable PXE booting in the PC's BIOS. The BIOS will typically have an ordered list of boot devices. Simply choose the PXE NIC as the 1st boot device, save and exit the BIOS. For PXE to work, you must have a DHCP server that will provide boot server and boot file information to the client in addition to the client's IP address. The boot server will provide the boot file to the client via TFTP.

Hi, I want to boot my client from network ,for this I should activate PXE NIC, Can anyone tell me how can I activate PEX in my system?
Should I do this from Bios?
Building on what Southallc said, you first have to enable PXE on the Network card in BIOS, then do the boot order.

I use windows 2003 servier with RIS (Remote Installation Service), on which you can run an image of Windows XP. Plus the server must run DHCP as southallc said.