I'm currently in the market for an iPad, But since I'm going to use it for school I need some sort of file management. I have several classes with a varaity of file formats and like to organise them that way. I did a search on the forum, but am not quite sure yet. Basicly I'm looking for an app that lets me manage files on the iPad. Sort files according to class, several filetypes per folder like .doc .ppt .xls and .pdf Preferbly not an online service, dropbox is nice, but wifi is not available in the train or through the entire college. I hope such an app exists, this is a real dealbreaker for me.