Administrative permissions are necessary so that the Adobe Flash Player installer can access the Windows system registry and the following folder:
C:\WINDOWS\system32\Macromed\Flash folder for a 32-bit machine
C:\WINDOWS\SysWOW64\Macromed\Flash folder for a 64-bit machine
In Windows Vista® and Windows 7®, regardless of your permissions, you can run any application as an administrator. To run an application as an administrator, right-click the filename and select Run As Administrator. Provide the administrator ID and password when prompted.
If you need more help, contact your system administrator.