Got an emulator that needs a playstation bios ...(pal) 7502 9002 ect...cant find one on the web.....any ideas

There is a reason why they can't give you the BIOS with the emulator and it is the same reason why I am going to close this post.

However you cant have looked very hard, because last time I looked PS BIOS files were incredibly easy to find.

Try searching for SCPH7502.zip, it turned up plenty of results for me.

or

Q: How do I dump a PlayStation BIOS?
A: To dump a PlayStation BIOS, you need a GameShark or Action replay and a PC comms
link. To start, you need either a real Caetla module or go to altavista and search
for "Caetla" (it's a BIOS replacement for your module, so properly read the included
documentation before installing it!!). Now upload "Caetla", and use use the caetla
commands for downloading a binary memory image from the region 0x0bfc00000 -
0x0bfc7ffff! Now save the image as SCPHxxxx.bin, where xxxx is your PSX's model number,
and ePSXe will recognise it and use it from now on.