You can only order the guide by channel name or channel number, so as far as I know you can't do what you want.
There is no way to alter the format that media center records in, you are limited to wtv and have to convert the files once they are recorded.
Win7 x64, Intel d975xbx2, Q6600, 6GB RAM, 500gb sys + 1tb rec tv, HD4550, Pinnacle 7010ix, Hauppauge Nova-hd-s2.