use windows xp support tools like apimon, depends to see wat services it initialises wen its started.. depends my personal favourite...
n then delete or rename any .exe files it rewquires to be initialise bt not critical for system processs.. ,
like imapi..
or any .dll file... like msvbvm60.dll required for viruses made in visual basic..
at last u can try running msconfig..n see wat all services are started on boot...
also wen killing the process u can kill the process tree in task manager then jus the process..
i think this is sufficient..
ashtified..
HELL WAS FULL SO I M BACK.