I just downloaded the trial verson and need to edit my video's audio to remove background noise. Can I do this in Premiere Elements? If not, can I do it using Adobe Audition? I have a license for that already.
moving to the Premiere Elements forum
I don't have Audition, but I've read many posts to threads like yours saying that Audition is much better for that.
This article will give you some tips for removing some background noise: http://forums.adobe.com/thread/572518?tstart=30
Now, much of the success will depend on the exact frequencies, that you need to eliminate, or attenuate, and the frequencies of the Audio, that you wish to retain.
As for programs to do the work, several are mentioned in the article, but if you have Adobe Auditon, it has a Noise Reduction Preset, that is very effective, with some background noise.