Ok, I now know what was sent to me, that luckily I caught first. It was the Bugbear Virus. The size of the attachment is the exact size listed in a warning from another site. Note: mine said the name of the attachment was 100% doc.scr, but the attachment name could change. The following was posted on another Roots-L site: Listers; There is a very nasty worm out now called Bugbear. BEWARE of LARGE attachments that you receive sometimes coming as replies to fool you. It has already struck about 200,000 computers in 24 hours. It is designed to disable firewalls and create open "backdoors" for future attacks and may not be detected immediately. This E Mail attachment is 50,688 bytes in size ! Symantec has classified it as Category Four out of a possible five. Bugbear is also known by the names of Tanatos and Tanat. Once lodged in a machine it memorizes keystrokes, leading cyber experts to believe the intent is to steal credit card , bank account information or passwords from your computer. Once lodged in a machine, Bugbear searches for e mail addresses and sends itself to every address that it finds. It is much more prolific than the lingering virus Klez .It disguises itself as a reply or forward and targets systems and version of Microsoft Internet Explorer and the e mail program Outlook Express. They recommend you install software to protect your computers. Free virus removal tools are available from: www.symantec.com and www.mcafee.com This is not a hoax as many warnings have been proven to be. Go on the internet to Symantec security hoaxes and check this warning out for yourself before ignoring this warning. Be cautious and scan all E Mail attachments for viruses. Back up computer files on an external storage device. It is a shame such sickies are around.