User Account Control (or UAC) is a feature in Windows Vista which allows for an advanced level of security at the expense of a whole lot of extra mouse clicks. For the average user this is great, it forces them to think before they act. However; for power users such as myself this is entirely unnecessary. Disabling UAC is actually quite easy. Just follow the next 4 steps and you’re good to go. You can even follow them again (with one variation) to turn it back on.

1. Launch MSCONFIG by from the Run menu.
2. Click on the Tools tab. Scroll down till you find “Disable UAC”. Click on that line.

1. Press the Launch button.
2. A CMD window will open. When the command is done, you can close the window.
3. Close MSCONFIG. You need to reboot the computer for changes to apply.

Note that you can re-enable UAC by selecting the “Enable UAC” line and then clicking on the Launch button.

(I found this as well as 3 other methods to shut off UAC on petri)