Thanks for responding, Whocares -
I do have WinXp he, The names of the infected files are:
C:\Windows\System32\svhost.exe (Win32;SdBot-96-B [Trj]
C:\Windows\system32\system2.exe (Win32:SdBot-101[Trj]
C:Windows\system32\fffilto.exe (TROJ REVOP.A)
Avast detected the first Bot listed above and Trend detected the next two.
I gather from your comments that the first two are spybots - is the last one a trojan?
Frank