Catagory and Arcade ModCP ?

[My Dark Tower]

I have 1000's of games already catagorized. How do I install them into seperate catagories? Also my Arcade ModCP only shows a blank page, with this text This error (HTTP 406 Not Acceptable) means that Internet Explorer was able to receive information from the website you visited, but the information was not in a format that Internet Explorer can display
What did I do wrong?

Thank you for your time.:confused: