Well, I've been getting a lot of requests from people with Wordpress blogs on how I made the sign-up form using thickbox, I got tired of helping people so I made a plug-in that everyone can use here: http://thickboxsignup.com/ I've been using this to get a LOT of new subscribers in the last 2 weeks so highly recommend it if you are a blogger.
Commented on your blog (one that shows how to DIY.) Everything seems to work fine, but the box does not scroll with the pages. Any help in fixing this would be appreciated. I even just tried copying the code from your page, but still no scrolling and it opens at the top of the page, even if you are scrolled down. Thanks for any help.