I drawed mostly zero on the hunt for this one. No company website = no support. I did find that this driver is on a driverpack disk, which means you will have to download the entire cd disk, then burn it to a blank cd-r disk and use that disk to install this driver. A lot of trouble but so far it's the only solution I see.
Do a Google search for this file: DriverPack_WLAN_V511.7z