Redirect after registration

[alternity]

I've used the form hack to make some custom forms that I'd like users to fill out after they complete registration on the site. There is no e-mail verification so I'd like to immediately kick them over to the form I made. I checked the templates, but I did not find that "Thank you for registering!" page, which is were I would setup the redirect. So I'm guessing it's hard coded into one of the files. Can someone tell me where I could find it, and if they're feeling generous if it's possible to make one of those nice "Redirecting..." pages to a specified URL in place of the "Thank you for registering!" page? But really I just need to know where I can find that template/file. As always, thanks for the help .