Well, we have graduated from our 1 dog family now to 2 for a couple months. My hubby's 85 year old grandparents have decided to escape the Iowa winter and drive down to TX for 2 months. They'll be doing lots of traveling and thought that Pixie, their 1 1/2 year old mini-doxie pup would be happier playing with Rusty (our 3 year old standard dachshund) for the 2 months instead of hanging out with them. They dropped her off yesterday with all of her toys, kennel, bed, etc. but not a leash. That situation was fixed quickly, since to keep myself sane I need to take them for a walk each day to work out some of the energy.
Because this dog is going to be with us for the next 2 months, I'd like to teach her some commands - mostly stay, come, sit, bed (to lay in her bed) and kennel (since she is kenneled when we're at work so that Rusty can have some time alone in his house). How do you go about doing that when there are two dogs? I spend lots of time praising Rusty for doing what he knows how to do, but when I am trying to correct (verbally only) Pixie for not doing what he's told, Rusty looks nervous. I don't want him thinking I'm correcting him but I need to follow through with Pixie... How do you multiple dog households do this?
Thanks and I'll take some pics of the two of them later this week when life is a bit more sane so you can see her - she is opposite from Rusty in every way. Rusty's got stubby little doxie legs, is large boned (for a Dachshund), and is very dominant. Pixie is dainty, has long-ish legs, and is very submissive.

Shelley & Rusty
http://www.bump.us/rusty
Because this dog is going to be with us for the next 2 months, I'd like to teach her some ... can have some time alone in his house). How do you go about doing that when there are two dogs?

Two words: One-on-one training.
Your husband can have some quality time with Rusty while you're somewhere else training Pixie. I spend a lot of time interacting with both of my dogs and all interaction is training of sorts but basic anything needs to be taught with no distractions.
To go a step further - why don't you take Pixie to a basic obedience class during your time with her?

Matt. Rocky's a Dog.
I don't want him thinking I'm correcting him but I need to follow through with Pixie... How do you multiple dog households do this?

Try to work with Pixie in a separate room, or have somebody take Rusty for a walk while you work with her. It took our dogs a while to get used to having a puppy in the house and get used to the fact that we were talking to her and not to them. We also had all the dogs take turns in doing things, but we had more success keeping the dogs apart while we work with one.
Thank you both of you for the advice. My hubby is traveling for the next 2 weeks for work, but when I'm working with Pixie I will make sure that Rusty's got a good chew in a different room when I'm training Pixie. She sure is a sharp little dog - I've already got her going to her bed when I tell her to. Smart little thing. Emotion: smile
I have also thought about taking her to a training class. The ones I've called at (Rusty's trainer quit after we finished with Rusty so that he could focus on breeding - he breeds GSDs for schutzhund and police officers) have had a waiting list and we wouldn't have gotten one in... I'll continue calling and continue kicking myself for not doing it sooner since we've known about her coming for a few months now. Oh well. We'll get her trained, whether we get her into a class or not... Thanks for the advice.

Shelley & Rusty
http://www.bump.us/rusty