The XP installation CD doesn't provide such drivers.
Hope this hopes.
I installed Ubuntu 8.1 as a second os on my xp system. Asus p4pe Socket 478 Pentium 4 which is my motherboard has build in Realtek rtc 8137 family pci fast ethernet nic.
If I boot into the Ubuntu os I have internet which is Comcast cable. If I reboot into xp I do not have internet connection. While in xp if I go to device manager it shows the nic card working. When the nic device is working there is a small green light that is on at the back of the computer where the RJ-45 plugs in. This light is on when I'm booted into Ubuntu but it is out when I boot into xp.
I have voice over internet phone service which is working fine and I'm typing this on my wifes computer which is working fine on the internet connection.
I've tried uninstalling Ubuntu but this did not fix the problem. I used my back up system to reinstall my c drive but the problem has not gone away. I've now reformatted my c drive and did a new intall of xp but this did not correct the problem.
Ubuntu forum, Asus forum have not been able to help.
Thanks for looking at this problem.