A change in allele frequencies is definately NOT evolution. What that kind of change does is allow you to breed all different kinds of dogs. But you'll never end up with anything except a dog. If you really want to prove me wrong, then reference me to a dog breeder that's bred anything except a dog. They all have the same basic body plan, and they aren't about to change into anything new. In fact, the more you selectively breed a type, the worse off it is. Dogs are more susceptible to diseases, they have body deformations (which in some cases is kind of cute, but my dog has to blow snot out of its face every five seconds because its face is flat).

What you want is for NEW genes to be pushed into the gene pool. Simply reshuffling existing alleles isn't going to help. Try it with a deck of cards. Keep reshuffling the deck and dealing hands of three. You can get all sorts of different combinations, but eventually you run out of unique combinations, unless you can throw in a card that's never been seen.