Uninstall WindowXP SP2

[Sokunthel]

Hi,

I'm facing a big problem now, my Antivirus software(I'm using Trend OfficeScan) doesn't work since the day that i installed SP2.
Let me explain what i did:
I installed SP2 in two different computer (1)Unlicense window and (1)License window. I can uninstall SP2 from the License cos i found the uninstall function in the Add/Remove Program, but from the Unlicense i cant do like on License machine.

My question is how can i uninstall SP2 from that kind of computer?
I cant see the SP2 in the Add/Remove Program.

Hope to hear from all of u soon
Thanks

Sokunthel