As one noob to another, check out:
This page has helped me out with I-don't-know-how-many ultra-noob problems Not saying that your current problem is a noob problem, but I'd look there first. Most of the how-to's have easy, step-by-step problems.
Aside from that, you'll need to provide some more information in the forums to clue in the gurus... What version of Ubuntu, for starters. What computer? Have you tried anything to set up the card, and if so, what?
Persevere. The learning curve for a basic ubuntu user is steep but short.