One of the main problems found by hams when they approach to SDRs is the User Interface, as they are used to knobs and buttons and not to click with the mouse. But this is no longer a problem, thanks to Tobias DH1TW. Please, take a look at his PowerSDR-UI Project at:
There is also a YahooGroup devoted to this interesting project at:
Hope this helps!
73 JOSE EB5AGV