netstat -an -----Original Message----- From: windows2000-bounce@xxxxxxxxxxxxx [mailto:windows2000-bounce@xxxxxxxxxxxxx] On Behalf Of Ray Costanzo Sent: Monday, December 18, 2006 2:18 PM To: windows2000@xxxxxxxxxxxxx Subject: [windows2000] Port an app is using Hi list, Does anyone know how I can find out what port a network-enabled application is using? I have an internal instant messaging program called Tonic (http://www.r2.com.au/), and I'd like to find out what port it uses to connect to other clients. Any ideas? Thanks, Ray at work