Configuring IIS to sendmail

Has anybody actually configured IIS to send mail? We are converting from Linux to IIS. I need to setup IIS to use its SMTP feature. How do I go about configuring it to send form results via email using its own mail service or how do I get it to workwith our Exchange Server. Any good resources on this topic would be good too. The Resource kit is useless other than telling me it can be done.