I host my sites from a server at home on a static ip. I'm thinking of adding some sort of forum to one of the sites but most forums want to email new members a password. How can I setup my Win 2k3 server to email out for this? I don't need full email support as I don't really want to mess with it, although for the sake of knowlegde it'd be nice to know. Mainly I just want to be able to send out emails via my server for things like initial sign up and the like. Any help is appreciated.

I can get Exchange if I need to (v2000) but as i don't really want full email support I'd rather not install it if I don't HAVE to.