would it say it is from one of your friends?
Yes it could.

Many viruses create email lists from address books and html pages it finds on infected machines and then pairs off the names it finds.

I.E. if your friend A has an address book with you, friend B, friend C, and friend D all in it, then you likely will get an email saying its from friend B, and friend C will get an email saying its from friend D.

Another common thing will be for it to insert a random name infront of 'your' domain name.

I.E. if you use AOL (god forbid, and my appologies) then you could get email viruses saying their from people like [email protected], [email protected], [email protected], [email protected], etc...

Another thing to keep in mind, if you use either Outlook or Outlook Express I'd highly recommend that you both turn off auto-preview and the preview-pane and that you make sure to update to the current patch level of I.E. 6 (even if you don't use IE to browse). Otherwise there are multiple viruses written into email headers that can infect your machine as soon as you receive it...

Just as a few extra thoughts for you,

RRP