Hello oldblush
This is part of Vista security
Use the Run as Administrator option.
By using the Run as Administrator option you can allow an application to run once without the need for full administrator privileges.
1/ Locate the applications icon or short cut and Right click on it
2/ From the Drop Down Menu select the Run As Administrator option
3/ Now click the application icon or short cut and it should run
4/ When the User Account Control (UAC) message appears enter the appropriate credentials if you are logged on as a standard user, and click the Submit button
5/ If you are the Administrator and UAC is not configured to always require credentials, just Click the Continue button and the application should start.