do i need a spechial program to run csos? im using umd emulator right now and basicly my psp locks up when i try to run a cso or should just use a diffrent program?

Update to custom firmware such as 3.40 OE. It allows the native support of iso and cso formats. They will just go in the ISO folder and will boot from your memory stick right from your xmb.

You'll probably want this -
3.40 OE-A Easy Installer: http://www.psp-spot.com/forums/index.php?showtopic=38950

Anything 3.40 OE or above will work. Personally, I am running 3.51 m33.

it still works on 3.40 oe-a anyway well it does on mine