I will just add to Alan's excellent answer above, that the kmod-rt3572sta is the "newer" of the two drivers so is probably the preferable solution in this case, but do please feel fr... [by NedSlider]
on 11/21/2012 – Made popular on 11/21/2012
So I plugged in my WUSB600N and behold, it worked. I can see all networks .... except my own. Here is what I've done:
1) reset router
2) changed ESSID
3) changed the channel for 2.4ghz
4) I've compiled the driver rt3572sta that is on most of the posts that I've found via Google. I completed all steps except for "sudo modprobe rt3572sta".