Please help with Applescript and smb. Please!

I'm trying to write an Applescript that will connect to my company's Win2K server, so that I don't have to type the login string in the "Connect to Server" window. The script I'm trying is:

on open
tell application "Finder"
mount volume "smb://domain;user:password@server/share"
end tell
end open

When I paste the "smb?quot; string directly into the connect window, it works like a charm- but no dice as an Applescript application. Any ideas?

Allen

P.S. I know about utilities like Sharity that will log you on automatically, but I'd prefer to do it this way so that I only connect when necessary.