Can you use something to read the file system on your v3xx, go to the skins folder (or create it if being blank deleted it) and copy the stock themes back into it? I use M-explorer. You won't get your other themes back, but I should think you could hook up the phone and get into it with M-explorer even if you can't see anything useful on the screen. Then reboot and you may be OK again. Just be sure to put the stock ones in that the phone reverts to when necessary (not sure which ones those are so I'd do them all). You can find them in the DL's area I believe.