23k to 2Mb? A lot of ISP/mail providers would reject an attachment that size and viruses want to spread?
makes sense but adding about more than 200 names to the list of addressees does not increase the file size by as much as cyberlord noticed. I have outlook and I have already tried it with ore than 200 names. Although that might be the case with a different mail prog. i used outlook 2k to try it out on.

Anyway, like nihil said just run the scan cos you never know and then let us know the outcome and maybe someone here can cmoe up with something else.