Broadcom BCM94306MPSG

My laptop is a C600/C500 and have installled a 1350 WLAN MINI PCI wireless card (Broadcom BCM94306MPSG) and have connected the antenna cable. I have checked the dell support sites and googled for driver files for this product with no luck. Most drivers refer to D600 models but I have read that this C600 model is wireless ready (hence the built in antenna) and would like to find a driver file. If this product is not compatable please could you tell be what wireless card to look for? I live in the USA and am running Windows 2000 Pro SP4 and would really appreciate any help finding a driver. Many thanks...