Launchbar has a feature that allows one to run a script when the result of a search is a phone number. I found the following script online, which allows you to dial the number in Skype.
property lb_prefix : "tel:"
on handle_string(s)
--trim the LaunchBar prefix if it exists:
if s starts with lb_prefix then set s to ¬
(text ((count lb_prefix) + 1) thru -1 of s)
tell application "Skype"
get URL "callto:+1" & s
end tell
end handle_string
This works fine for US numbers. However, it doesn't seem to work with international numbers. For example, if the number starts with "+44" then the script will tell Skype to dial "+1+44." Does anybody know how to modify it?
Mac OS X Hints
http://hints.macworld.com/article.php?story=20050810145110629