Anilrgowda

One of the new features that you will immediately notice in Vista is User Account Control or UAC. It is designed to prevent unauthorized changes to your computer. Each time you attempt to perform a task that requires administrative rights, a dialog box appears prompting you for permission.
This feature is enabled by default and Microsoft recommends that you leave it turned on. However, if you are the only one who uses your computer, you may find the constant prompting annoying. In such cases, you can use the steps listed below to turn this feature off.

1. Click Start and click Control Panel.
2. Click User Accounts and Family Safety.
3. Click User Accounts
4. Click Turn User Account Control on or off.
5. Click the box beside the Use User Account Control (UAC) to help protect your computer option to remove the check mark.
6. Click OK.