I just did a google search, see if some of these links are helpful.
PHP form generator
Website contact form generator
Instant mail form generator
That’s just the first few from a google search for “form generator”. The first is a program from sourceforge you can install on your computer, and the others are web-site tools. Just make sure that you post is going to the dreamhost form mail script, and not someone else’s server. Check out formmail.dreamhost.com for some slightly technical help on the DH end of things.
If this isn’t working for you, I’m sure someone like me or others on the forum would be willing to trade money or goods for making your form for you.