Save your sanity. Take a large hammer and smash that Belkin into lots of little pieces. Then go and buy a decent product instead.
Linksys, D-Link, Netgear.... all far less hassles.
Belkin buy in any old cheap tat from China and rebadge it. This means they don't keep their drivers up to date. Hence why your last fix involved finding the drivers of the original manufacturer of the device.
(AFAIK) Linksys and D-Link make their own kit. And Netgear are far more lively about updating their own stuff (and have a decent support site).
(The above is based on personal experience as an IT support engineer. Based on "ease of install" vs "time wasted" of the thousands of wireless setups I have performed. I don't want to start a flame war here... sometimes one can be lucky and get a Belkin product to just work "first time".... but I always advise spending a few extra beer tokens and paying for decent quality)