Hi kacpro090 install SH3 Outside Program Files X86 just on drive C:/or on a second drive.
is your cd version of SH3 the Original release from 2005 with the Starforce Protection on the dvd if so you would need to remove Starforce software or i can send you a download link to my SH3 Revival install that i zipped up using 7zip
download link sent regards blackswan40