How can I add Twitter to the Social Bookmark area?

[DISLEX]

I have the icon I want and, but I am not sure what coding to place in the

"Link - Replacement variables: {URL} is the given page url, {TITLE} is the given page title." field.

Is this even possible?

[ChopSuey]

<a href="http://www.vbulletin.com/forum/showthread.php?314457-Add-Twitter" target="_blank">http://www.vbulletin.com/forum/showt...57-Add-Twitter</a>