You have not given us a clue about what errors you are getting, what they say, what is the text of the error. Without this information it is impossible to even guess what you are talking about.
Have just recently installed a SATA HD in my system, in replace of a PATA HD. The only real problem that I'm having with it is related to the Internet! I can't really see why this would happen but I get more net related errors since installing the new drive, even after installing the Windows XP Pro system over four times. Any ideas or suggestions?
My system is run on a P4 w/HT 800Mhz fsb 2.4Ghz processor, on an Intel D875PBZ mainboard with 1.0GB RAM installed. (If that helps)