Modify Infrastructure View - Delete Unwanted Categories?

Hi,

I have all custom infrastructure views, but you cannot see any of them without clicking 'more' on the main page. I want to delete all the ones listed at default (Routers, Switches, Firewalls, etc). I'm sure this is possible without a hotfix or patch. I looked around, but I couldn't find which html or XML file these were listed in, so I'm guessing they're pulled from the backend?

Oh, and if I try to delete them (well, the ones you're given a choice to delete), it says " No Infra Structure View found with this name.", so I can't.

Has anyone prodded around and found how to modify the default main page at all?

Thanks.