Hi, and welcome to the forums
We are very lucky to have a seperate sub-forum for MediaCar. I don't think it needs to be split up into any more sub-forums, otherwise things will get too split up.
The search facility here works well (unlike another forum I visit, which has turned off full text searching - you can only search the titles, and you can't search for more than one word without it looking for all words sequentially!)
The Skin Presentation thread is a good place to get skins, although some links may be a little outdated. If so, post a thread saying "these are outdated, where can I get them from?" and someone who has them will be able to provide you with them
As for what hardware is supported...read/search, or if in doubt, ask!