having some problem here

when i run a game...here's an error...* !Error: PSX BIOS not found(NULL).

i download the correctly the emulator...and the delta..and the epsxecutor1063-prerelease but still...i won't work..what shud i do..??

You need to obtain the Playstation Bios and put it into a bios folder inside the ePSXe folder.
Then in the ePSXe options browse to the location that you placed it.

The Playstation bios (schp1001.bin being the most common), is a copyrighted rom so in line with this forums AUP, we cannot provide links or assistance on how or where to obtain it.

Google might help.

Note: There is an extensive guide to setting up ePSXe in the stickied section at the top of this forum. HERE