There is an email virus going around in Zip attachments and usually with the email subject line of "Good Day".

http://www.microsoft.com/technet/security/advisory...

http://www.microsoft.com/athome/security/update/bulletins/200609.mspx

http://news.yahoo.com/s/ap/20060926/ap_on_hi_te/mi...

Be careful...update your anti virus.