i have updraded an inspiron 8600 which i have upgraded to 32 bit windows 7. I don't see any need to debate the wisdom this. the os is working fine. processor is fast enough and cool. from the factory (with XP), the laptop has a wireless card - Intel p/c WM3A2100NADELL model WM3A2100 ... Dell p/n 09y200......Rev A01. i need a driver. when dell sees that it is an inspiron 8600 it provides xp drivers which immediately tell me they wont work. i have not been able to find anything useful from intel either.
Intel only released Vista drivers for that adapter. But, being so old they may not be available any longer. If that's the case you'll have to purchase a USB based wireless adapter with Windows 7 drivers.