Re-associate .DWG files to Open with Ss5 instead of Ss4

Hi Everyone,

I've just installed AECOsim Ss5, with Ss4 still on my computer. How do I associate .DWG files to open with Ss5 and not Ss4? Every time I browse to the Ss5.exe file to re-associate what program to open .DWG files, windows comes up with Ss4 as the default program.

Thanks in advance,

Lincoln