i downloaded burnout dominator from mininova.com and then i extracted. a folder called "PSP_GAME" came out, which obviously has no format cause its a folder like any other folder.

ive tried using various converters like ISO Compressor, and ive treid putting it in the GAME150 folder in my 3.03 oe-c PSP and it didnt work.

Please tell me how to fix this problem..thx

and there was nothing in the folder?

yes there is :

-SYSDIR
-USRDIR
-PARAM.SFO
-ICON1.PMF
-PIC1
-ICON0

and all that is aproximatly 650mb

thats the iso info, you just need to turn that into an iso. maybe someone else can tell you a program to use. id just download it again.

It sounds like you extracted the ISO file.
This is quite a common mistake as WinRAR auto-associates itself with ISO files, making them look like RAR files.
So as long as you've still go the original file, all you need to do is copy that file (it should have an ISO extension) to your PSP memory card.
If you don't, you either have to re-download it, or put it back together using UMDGen (v4.00).

u cud but bak into an iso using nero or ultra iso by writing it to an image drive