Need Help With .Wads

Hello, im new, I need some help with the .Wads. I am Using Doom-PSP V-0.04. I got the Half Life Wad to work, but the counter strike one it didnt work, it loaded up right, and then a black screen. Anyhelp please?

EDIT* Got it to work, just had to re-name it sorry

What did you have to rename it to work? I'm having the same problem.