I have got a Mavericks (10.9) installation on a Mac and a AWUS036NH WiFi card. There are several drivers to get WiFi card working. There is one of them in this page (http://store.rokland.com/pages/support) and another in the bear extender page, device that uses the same chipset.
The thing is that I installed the driver and the tool that is installed does the wifi connection to the router, its says that its connected but when I use the browser or other application, there is not internet.
Airport is disabled.
I dont know what can I do.