I suppose you use CDO or CDONTS component so there are two properties BodyFormat and MailFormat and if set to 0 you can write HTML in your email and look like HTML! See the example below:
Code:
Set objMail=Server.CreateObject("CDONTS.NewMail")
objMail.BodyFormat=0
objMail.MailFormat=0
Cheers
Kostas Lagos