@guppylover: Honestly I'm not good enough at genetics to say which are dominant and which are recessive. I believe that in general, the albino gene is recessive, so both parents must be albino, or carry the albino gene, in order to throw albino fry. I do know that to be true with bristlenose plecos. For them, the longfin gene is the same way, it might be the same in guppies, but short fin guppies don't usually make it past the feeder tank.
With guppies, though, I'm more of a 'throw em together and see what happens' kind of guy. I've noticed offspring that look like mom, some that look like dad, and some that look like a mixture of both or neither at all.
Working with newly bought females can be difficult because they are almost always pregnant, and can have multiple pregnancies from a previous encounter with a male, so you have an unknown factor there for several months. So when picking a new female, if possible, try to pick one that is in a strain-only tank, so that at least you'll have a higher chance of them being selectively bred with others of similar traits/quality.