Step 1: Open RunDedicated_Server from your Kuma Games directory. (Typically 'C:\Program Files (x86)\Kuma Games')

Step 2: Google "Whats my ip address?" and copy it.

Step 3: Go to http://css.setti.info/#addserver and paste your IP. (Don't forget to add your server port)

Choose "Old CS:S, HL2DM, ..." for the Gametype.

Step 4: Submit by selecting "Add server". A client will connect to the server and confirm your server. The server should appear on the list in just a few minutes.