The etqw-demoviewer_0-6.zip file you have requested: Tools and Utilities / Demoviewer / Demoviewer v0.6 - 842.3kb is not available. Perhaps try browsing all files for the game Enemy Territory: Quake Wars and upload any files you want to share or are missing. This is the only information we could locate:
With the Demoviewer you can doubleclick and play ETQW demos from any paths. Including demo controls.