There's one program called Hide User Agent. Using it you can get the same options as you can get while browsing via laptop/desktop, i.e if video supports you get to choose 320p, 480p, 720p or 1080p but the thing is it's unwatchable in n900 even when I tried 480p and overclocked to 850MHz but maybe my connection was too slow that time but I haven't tried since coz I was having other issues like OVI site not recognizing the browser and pages openin in mobile version..