Computer technicians/experts/manipulato... pls help?

We have a verey big problem in the HighSchool Department of SPUP almost all of the computers in our dept. had been infected by a virus so called:

"Gwen Garci Sex Scandal/Imeges/Videos"(im sory if the spelling is wrong) our anti spyware did not work/deleted the virus, our updated avg free edition did not work/deleted the virus, our updated norton 05 did not also work/deleted the virus. pls tell us what antivirus or what kind of process we will be doing exept reformating system restore cannot help because the virus came from a flash drive of one of the teachers. pls we need your help we must act fast bec. if the principal of our dept. will know this all teachers will be in a very big trouble. SO PLS ALL COMPUTER EXPERTS/TECHNICIANS/MANIPULATORS/PROGRAM...

PLS HELP

Computer technicians/experts/manipulato... pls help?house call

If you follow all the following steps it should get rid of your problem and prevent future problems. All programs listed are free.

OS Reinstallation vs. Virus Removal

http://safecomputing.umn.edu/guides/rebu...

When should I re-format? How should I reinstall? (#10063)

http://www.dslreports.com/faq/10063

Securing a Personal Machine

http://safecomputing.umn.edu/studentchec...

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Update your antivirus and run a full scan

If you do not have full time (active) virus protection install (only one) all are excellent: