antivirus.com CAUSED my PE MAGISTR.B?

“IT” virus info website says that the source of PE_MAGISTR.B virus is, in fact, Trend Micro-sourced!!!So that’s how I got it? I am supposedly being HELPED by P-cillin 2000 to quarantine these files, but are they a hoax? Am I really damaging my harddrive by allowing them to scan my files? What should I do? I did a virus scan with www.antivirus.com, had no viruses, then got so-called “help” from someone, and now I have 17 infected files thatr p-cillin says they quarantined…did not give me clean or delete as an option. Why are they still allowed to call themselves antivirus if they are the opposite? PLEASE HELP QUICK, I DON’T GET IT!