Not really....
To turn off UAC go to the 'search program and files' box in the 'Windows Start menu' and type in User Account Control' and select 'Change User Account Control Settings' which will get you this screen:
Alternatively, you can go through the 'Control Panel' screen and you will see the bottom option will get you to the above screen:
I honestly don't know why RSII will be installed to the "c:\program files (x86)" folder when you pointed it to the "c:\program files" folder. I'd suggest creating your own "c:\games" folder and installing all games there or a similarly named folder.