Can you play ds games on psp? firmware 5.01?

I have a psp firmware 5.01m33 i tried putting the psp portal on but when it told me to go on the browser and put in the address in the line after i would hit start it would say cannot be displayed. None of the videos on it have acctually show a game playing that i can find, i just want to play about 3 games thats all i have a 8gig mem card for that or a 16gig also.