[RESOLVED] Page in DLL

Hi, I have a usercontrol that makes use of a popup page. These are part of one project, that is compiled into a DLL and included in my main website.

The usercontrol works fine, i can add it to the page etc. however, when i click the relevent button in my usercontrol i do get a popup window, but it's an error 404, page not found. I'm guessing that's because the page in question is in the DLL.

My question is, how do i link the page thats in the DLL to a particular URL, or more widely, how do i allow the usercontrol to open it without having to include the aspx in my main site?
Cheers!

I needed to add the page class that's generated and contained in the DLL as an httphandler for MyPageName.aspx in the web.config.