Quote (CitizenScuba @ Jan 2 2011 10:35pm)
Aperture 2, Cs4.
Would prefer to use Aperture 2 over Cs4.
To be honest, I don't use aperature. PS and LR for me

Anyway, basic thing to remember: yellow is countered by blue, and vise versa.
Green is countered by magenta, and vise versa.
If your photos are yellow, you adjust the wb to add more blue. Back in the day when I was learning how to edit, I was even able to do it by adding a blue color layer. Nowdays, PS should have a wb adjustment button.
Second: you should always have a base white, which is what you consider the whitest available within the photo. Although wb may not be accurate then, it gives you a good starting point.
Now you have to correct exposure within the image. The dog was underexposed while the snow was blown out. Since you can't do anything about the snow, at least increase exposure in the dog.