itunes install error

ok so i've not had an issue with itunes before. This time I tried updating to the 10.7 version and it seemed to run fine until I tried to open itunes, an error message popped saying that the shorcut refers to an app that requires administrative privileges and i had to verify my privileges. So i uninstalled everything and tried to reinstall and now i have an error message that says "Error writing to file: C:\Program Files (x86)\iTunes\CD Configuration\gcdrdll.cfg. Verify that you have access to that directory". i follow the path in my computer with no issues but when i get into the CD Configuration folder, the file gcdrdll.cfg isnt there, its missing. is there any way to fix this problem?