First read how to submit your guid if you haven't yet.
1. Start Enemy Territory. Connect to a fearless assassins silEnT server.
Our silEnT servers are
3. Type /sil_guid in your console. The command will show 30 digits followed by :2, looking like this: "sil_guid" is:"XXXXXXXXXXXXXXXXXXXXXXNNNNNNNN:2".
4. Type /condump mysilentguid in your console.
5. Go to wherever you installed Wolfenstein Enemy Territory in explorer. Open the Wolfenstein Enemy Territory folder. Open the folder called silent. Open the file called mysilentguid with notepad. Copy the 8 last digits - excluding ":2" - of your silent guid (you can search for "sil_guid").
6. Submit the guid. Click your name in the top right corner of the website. Click "My Settings". Scroll to the bottom of the screen and paste your silEnT guid next to "S:ET GUID". Save changes.
Note: if you do not succeed, you could ask an admin on a silEnT server to get your guid and send it to you through forum-pm. Skip to step 6. This is a last-resort solution though.