Setup Mail Server on windows 2000 Pro

Hello everyone.
I recently regsitered my domain and I am now publishing my site using my WIN 2000 Pro Machine. I would like now to setup an email server and I am looking for an inexpensive mail server that will give me the option of having access using webmail. Does anyone recomend one that will be inexpensive (free better) and that could do the job. Thank you in advance.

SAM DLC