Geez how hard can it be? It's a just a 10 channel conventional scanner!
Try this. Push the button labeled "manual" until you get to channel 1. If it has a program button on it, push it. If not, just keep going. Next, type in 154.28. Push enter. The display should read 154.2800. If so, congratulations you now know how to program your scanner, plus you just saved $6 plus shipping.
If it didn't work, try entering the frequency without the decimal (some old scanners think the . button means "oops I messed up, start over"). Failing that, grab the frequencies you want, find that really geeky neighbor kid who fixes everyone's computers and programs their VCR's, and pay him the 6 bucks to tell you how it's done and program it for you.
-AZ