There isn't really any way to get at the hidden files. You'd have to take it to your provider and get them to clean it out. You'll probably have to restore it to factory settings, meaning you lose all of your pictures and contacts. You could do that, or just upgrade to a phone with more memory...
i have some old pictures from poland with some polish written on the back. i've tried various online dictionarys and translators and none of them are too reliable, only giving me random words and whatnot. so i was wondering if anyone who spoke the language would be willing to help me translate...