hello...
you can use a variety of free scripts to do this - here's a perl one that has been around for years:
http://www.scriptarchive.com/formmail.html
or there are a ton of php versions as well:
http://www.google.com/search?q=php+formmail
basically, you have an html form and a back end script that receives the data and then emails it to you. hard to give more details than that w/o knowing what scripting languages your server supports, but 99.9% of them support one or both of php and perl...
(also search this forum's archives - this is a common topic)
hope that helps!
sitruc