Ok, you are going to see this a lot today, but my posts go onto the C# and VB home pages, so here goes;
Microsoft Consumer Virus Alert
Why We Are Issuing This Alert
W32/Mydoom@MM spreads through e-mail. This worm can disguise the sender's address, a tactic known as spoofing, and may generate e-mails that appear to have been sent by Microsoft. Many of the addresses Mydoom uses are valid addresses that are being spoofed for malicious purposes.
Mydoom Virus Alert: What to Do
Treat all e-mail attachments with caution, particularly .zip files in the case of this virus, even if they appear to be from a trusted source. Learn what to do about virus infections.
Complete Information: http://www.microsoft.com/security/antivirus/mydoom.asp