Adding Printer to Vista Computer

I have been trying to add a printer to my Vista computer. Everytime I click on add a printer the following message appears."You do not have sufficient rights to perform this operation" I am the administrator. What can I do to solve this problem?

 

1. Open Control Panel.
2. Under User Account and Family settings click on the "Add or remove user account".

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1. Click on one of the user accounts, for example you can use the Guest account.
2. Under the user account click on the "Go to the main User Account page" link.

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1. Under "Make changes to your user account" click on the "Change security settings" link.

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1. In the "Turn on User Account Control (UAC) to make your computer more secure" click to unselect the "Use User Account Control (UAC) to help protect your computer". Click on the Ok button.

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1. You will be prompted to reboot your computer. Do so when ready.

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In order to re-enable UAC just select the above checkbox and reboot.