hey, i've also spent the last few weeks slowly trying to find out what i can about forms. (i'm trying to create an online questionnaire).
building the form isnt that difficult, but you'll need some kind of scripting on your serving to tell it what to do once someone has input data. PHP, CGI-bin, ASP, ASP-NET. they're all different ways of doing things, although im only a beginner and couldn't figure out ASP, so im gonna try PHP. It looks fine but my webhost has decided to break-down today so i've got no way of checking.
search through the scripts forum on this site, or google search for web-forms, or PHP scripting, or other keywords you'll find heapsa stuff. also check out,
http://www.thescripts.com! Plenty o...kes a bit of time to find the stuff you need!