I need some serious help. This has been going on for some time now and it is just getting worse. For some reason I cannot get online at my house. sometimes it works, sometimes it doesn't. It always says connection timeout. Other pcs pick up the wireless connections, but my macbook pro wont. Another issue that I just recently started having was cd burning. It will spit out the cd before it is done and say burn sense: 3/0c/00 medium error. it also says something about write (10), block: 429296..... Anything will help at this point. thanks!

Connect the Mac via ethernet and run software update. There was an Airport update a couple weeks ago.
Troubleshooting tips for Fixing Wireless connectivity (including AirPort) problems: Dropouts, slow speed, more
http://www.macfixit.com/article.php?story=2005093011343164
Try another brand of media.