Give SimplyMEPIS 6.5 a try, you can download the ISO for a live cd at mepis.org. It comes with a package called ndiswrapper that will use the Windoz driver to get your Broadcom chip set working. Even running from the live cd it should have your wireless up and working.

Thank you for your reply ByCo. My priority is not the wireless at the moment because I think even ndiswrapper can't fix the issues with Intel's 4965AGN chipset. Any suggestions to fix the driver problem with my Broadcom's ethernet card ?