Dear main windows xp sp3 use kar raha hoon system main 2.80GHz processor aur 256mb ki 3 rams aur 512mb ki 1 ram hay. problem yeh hay mera pc mkv video files ko support nahain karta. youtube aur dailymotion per video buhat slow chalata hay hala kay mery pass 1mb net ka connection hay. agar firefox kay saath video songs chalanay to woh pc ki speed slow ho jati hay aur cpu usage 100% ho jata hay. agar kisi ko is problem ka solution ata ho batain plzzzzzzz. thankx