Shirley,
I'm not sure about theclipboardpart, but it seems that once you
retreived your text (string(s) of data?) from theclipboard, you might
want to use regular expressions to find URLs in that text. You could
start here:
http://www.google.com/search?q=C# regular expression url
The namespace System.Text.RegularExpressions has the stuff you need to
do this in .NET. Basically you use a pattern matcher for URLs and then
iterate through the matches to find all URLs in the text you retreived
from theclipboard.
Regards, good luck,
Jeroen