How To Turn The Rest Of The Word After The '@' Into A Hyperlink

I am parsing a tweet and need to search for any words that begin with '@'. I want to turn the rest of the word after the '@' into a hyperlink. I have a partial solution, but my problem is that the link which gets generated includes the '@' in the link text and the hyperlink, but I only want the text after the '@'.

Example:

"Username @SomeName blah blah blah blah"

I want to create the hyperlink text: http://twitter/SomeName

I have the following partial solution:


ASP Code:

body = Regex.Replace(body, "(@[^ ]*[a-zA-Z0-9])", "<a href="http://www.twitter.com/$1" target="_blank">$1</a>");