That's why alot of vets are not accredited trainers...geesh...see what happens when you shout....stop doing it if you haven't already.
This is a long answer and not enough room here so go to:
http://hssv.org/docs/behavior/dog_housetrainin g.pdf
also
http://orangedog.forumup.com/index.php?mforum= orangedog go to Behavior then Potty training, and there is alot of info for you there.
As for getting another dog, you should train the first one, potty training and basic manners, socializing etc.. so they are managable, so you can devote more time to train potty/manners, socializing the second one. It doesn't mean that the first dog will teach manners to the second dog, they will learn good and sometimes bad from each other(ie..second dog dig, 1st dog will see it and not say mom doesn't like that, they will actually start to dig and say hey that's fun) but it will be easier on you because the 1st one will be managable, and sometimes when they go out to pee the 2nd one will follow and copy. It's usually best to get one of the opposite sex, less challenges. If he is of good breeding (mom/dad had excellent temperment) )and he's socialized properly he won't fight her. Make sure one is fixed unless you plan on showing them, when they get abit older. I hope that helps you a bit..
P.S. Hey Lankeela I already typed this when you got your's on first. LOL ~/:\~