find out what variant it is using some virus scanner then search for that in google. try this too - http://www.trendmicro.com/vinfo/viru...WORM_OPASERV.S. or get hijackthis http://www.spychecker.com/download/d...ijackthis.html
save the log and post it here - http://castlecops.com/forum67.html someone can usually help.