The same thing happened to me. I had a discussion with myself and decided it was shit.
The one that made me laugh said that my credit card was going to be billed with kiddie porn. Apparently I had a subscription and three tapes a month would show up at my home…unless of course, I gave them my credit card info and social security number so they could cancel it. The virus was attached.
Unless I’m mistaken, the default setting in Windows XP Home is to **not **show the file extensions. You have to change the setting yourself to un-hide them.