It depends: conversational French or vocabulary French?
If you just need to know vocabulary, paste Post-it notes in French on nouns all around your home: table, chair, window, mirror, clock . . . (just writing them helps a lot). Then, viewing them helps build vocabulary.
If you need to know conversational phrases, try making your own cassettes or CDs. Talk into a recorder using both sides of the conversation; say, on side A. Then, record just one side of the conversation on Side B. (Creating them helps a lot.) Then, listen to Side A and try to understand what's being said, and listen to Side B to practice conversing.
If the exam is mostly reading and writing. It just takes practice.
Listening to French will help too. I checked a google search of "French radio online"; it was very helpful. And just hearing French actively or just in the background is how children learn their first language, and it can help you too.
You could try a YouTube search. I found this site for beginning French: http://www.youtube.com/watch?v=u4RlX84UJzk&feature=pyv&ad=7399180531&kw=french%20lessons
The words and phrases are said at normal speed; then, very slowly; and, then, normally again.