second time this week, virus from DGer

I hate to put this here, cause not everyone comes in, but this is the second time this week I've gotten the same virus from 2 different DGers. Didn't get me, it's the reason I use a Yahoo mail acct, it has Norton scan on it for downloads. If you get an email that's Re: Re: something you've already corresponded about, and it's blank inside with attachments, it's a virus. You can go to www.mcafee.com and scan your computer for free on a trial basis. Just want people to have heads up:)