Two great suggestions above. Here's a 3rd.

If you can count on an NT or 2000 machine use collaborative data objects (CDO and CDONTS to send mail programatically.

loCDONTS=createobject("CDONTS.NewMail")
loCDONTS.SendMail(tcFrom, tcTo, tcSubject, tcMessage)
loCDONTS=''

You can do attachments, and most if not all of the fancy stuff you can do with Outlook. I found some great examples (easily translatable from VB) in a book called "Active Server Pages 3.0" from Wrox press.

Mike