Thanks for the info on the list being hidden.
I had the virus. I stumbled onto F-Secure Corp. in Finland. I ran a check. I received a e-mail notice -
Network Associates WebShield SMTP V4.5 MR1a on webshield detected virus
W32/Sobig.f@MM in attachment your_details.pif from <my e-mail was here> and it was Deleted and
Quarantined.
I hope I was at a legit place!

I HAVE heard of Network Associates.