Hey, I wanted to know how to do fog and ground fogin Vue.  What myriad of methods are there for accomplishing either?

Distant fog is automatic, and depends on ths scale of your scene. Local fog can be achieved by using spectral clouds.

Depending on the kind of atmosphere you use, there are several options. The ones bruno021 mentions adresses to the Spectral atmosphere, which is good and the mainstream nowadays. If you don't need the spectral effects (clouds, godrays, realistic aerial perspective etc.) then you could play with the standard settings, these allow you to make fog with negative fall-off (getting denser upwards) among other things. You can't do that with the spectral or volumetric ones. For that effect with a spectral atmosphere you'll need a low cloud layer or something, and considerable patience upon rendering.
An example (by me) of a standard atmosphere with negative fall-off fog:
http://www.renderosity.com/mod/gallery/index.php?image_id=1983952&user_id=94819&np&np

• Picture of the Day at E-on and displayed in 3DArtist magazine. Just to emphasize that you don't always need the most advanced options to do well :)

Lars "bigbraader"

Lars is right, I forgot standard atmospheres exist too, lol! They're OK for small scale scenes, and render so much faster!

Yes, agree with Bruno, the standard and volumetric atmospheres are mostly obsolete and don't work for large "deep" scenes.  But in a few cases they are acutally to be preferred, easier to work with. And good to have in the arsenal as such :)

Thanks, if I were to use spectrals, how would it be done?

I'm working on a couple scenes (ADD ahoy) and both would be better with some form of atmospheric fog.  However, I don't think I'm giving up spectral atmospheres (I already have created both, and don't want to mess with them.)

Then use some low spectral clouds or metaclouds to create the fog.