Years ago I programmed my radios with RSS. I was afraid to try CPS, So I never upgraded. Well my hard drive crashed, & I started to get newer radios that were already programmed with CPS. So I tried it, & I would never go back to RSS unless it was a radio like a HT1000 that can only use RSS. CPS is so much easier with everything in the tree, & you can instantly go to whatever section you want without having to do F8, F5, F4 etc. Old Dos friendly computers are hard to find, but Windows XP laptops, with serial, & USB ports are running $125, or even less. Don't be afraid to upgrade to CPS. I'm sorry I waited so long. GARY N4KVE