Yeah, the biggest thing you'll need to know is what kind of volume controls the rooms have... if they are impedance matching, a standard two-zone avr will do the trick... are the rooms wired for video? What will be your source/listening material? What do you want it to do?
IF this area wont be running a complete av setup independent of the rest of the house, a basic two channel stereo receiver would be fine.
IF not impedance matched, I would consider a pretty basic receiver and an amp for each room. Keep in mind that the receiver will have to have a pre-out. Selecting amps that will input the signal and the output the signal to the next amp will be ideal... Thats probably getting ahead of ourselves at this point not knowing what kind of volume controls were installed. Then of course, you could swap the volume controls out and probably spend less money...
You have tons of options....