I'm working on a store module with a "Back Office" administration. Right now I'm struggling with the back office. So far I have a module to place somewhere on a page. The module does have a button "Back Office". I also added a new tab (programmatically) "BackOffice". There is also a skin for the back office that looks different than the rest of the website. On the top of the back office page (in the skin) is an asp menu placed that calls all the user controls (costumize products, categories etc.) later.

So if you click on the "Back Office" button you will be linked to the back office:
http://dnndev/en-us/backoffice.aspx.

So far so good. The menu on the back office page gets all the data from a xml file. I can see all the menu items. When you click on a menu item (i.e. to modify the company data) you will be linked to something like that:
http://dnndev/BackOffice/tabid/85/ctl/AdminCompany/language/en-US/Default.aspx

But here's the problem. I don't know how to add the user control "AdminCompany" on the page. Do I need an empty module to add the control? What kind of a module? Or just a placeholder for the user controls? What's the best? Any ideas?