motorwayne: The instalation of the ATT ROM is via your mini SD card...so if you don't like it or it sucks, all you need to do is do a hard reset without the mini SD card in and you're back to the old WM5 aren't you?
The installation is from the miniSD card, but it's flashing the ROM, so if you hard reset the device it will still boot Windows Mobile 6 AT&T.