Trottmpq,
The primary issues here are that there are no kernel headers or configuration files on the target, let alone the tools needed to compile a kernel module on the target itself. It's probably best to take the approach of getting the kernel source and configuration for the 9068 as it shipped and setup a kernel cross-compilation setup (basically, all that is needed to make that work is to change how you call make to compile the kernel). Once you've gotten that working, it them makes sense to check to see if there's a way to make the cross-compile flow work for the driver that you've located. There are some great resources out there, but you're going to need to get your hands dirty if you want to make the adapter that you've got work.
It's probably much, much easier to find an adapter that has better Linux support. Specifically, one that's supported by the kernel configuraiton (accessible on the running system by the /proc/config.gz pseudo-file)
