Hi guys I've recently installed Win7 on Toshiba Satellite A100 which had XP, how do I recover WIFI ?

I need drivers compatible near Windows 7 32bit, to enable WIFI on my Toshiba A100. You know when I installed the drivers that interact with upright with OSD functions used with "fn" key on the keyboard are away and so the WIFI remain disabled I want to enable it backbone again but I don't know what drivers I should download and where.

Can someone help please.