Internet connected, but only google works.

Before I begin let me just start by saying when it comes to computers I’m pretty much clueless, and giving complicated advise will only befuddle me :(

ok so I recently bought a brand new alien ware computer, and it has vista on it. After much trial and error I finally got my wireless internet connected. Re-assured of my connection from the five little green bars saying “excellent signal strength”, I sat down and was ready to meet the sweet embrace of online game addiction. BUT it wouldnt let me sign into my account :( opened up firefox to test if any webpages would load, but only google would work… I even tried entering words into googles search bar to see if it would work, and it did! But whenever I would click a link outside of google the page says loading and is just white… I tried searching (on google ;) for somebody who had the same problem as me, but all of the solutions I found either didnt work, or the confusing computer lingo gave me a headache…. so I guess my question would be: Has anybody else had similar problems? If so how did you solve them? and if you have never had this problem but think you might have something helpful to contribute I beg you to answer my plea for help! :(

and incase you tried to avoid the wall of text I’ll just sum it up for you.
My internet connection is fine (so it says)
only google will work
help!