IMHO, your easiest bet is to invest in some software that will help you program the radio.
If you do it by hand, you need to set the bank as Motorola II 800 Mhz
Then, plug in each freq, and set it to Trunk...
Once all the channels are in, you'd have to follow the manual to to get your talk ID's in there. It may take a while to do by hand.... definately easier to do it by software.
Software runs about $30 - cable is about the same......
If you'd like me to program it for you, I have a PRO-528 file and software ready to go..
PM me, and we'll take it off line.