Please help with xmame

[bastain]

I managed to install xmame on my gentoo (for me its worth a "wow"). After that, I get the 72er roms from mame.dk.
Now, when I want to start a game, I get:

xmame bankp.zip
info: trying to parse: /usr/share/games/xmame/xmamerc
info: trying to parse: /home/humbug/.xmame/xmamerc
info: trying to parse: /usr/share/games/xmame/xmame-xglrc
info: trying to parse: /home/humbug/.xmame/xmame-xglrc
info: trying to parse: /usr/share/games/xmame/rc/bankprc
info: trying to parse: /home/humbug/.xmame/rc/bankprc
Mouse/Trakball selected.
loading rom 0: epr6175.bin
loading rom 1: epr6174.bin
loading rom 2: epr6173.bin
loading rom 3: epr6176.bin
loading rom 4: epr6165.bin
loading rom 5: epr6166.bin
loading rom 6: epr6172.bin
loading rom 7: epr6171.bin
loading rom 8: epr6170.bin
loading rom 9: epr6169.bin
loading rom 10: epr6168.bin
loading rom 11: epr6167.bin
loading rom 12: pr6177.clr
loading rom 13: pr6178.clr
loading rom 14: pr6179.clr
done
epr6175.bin NOT FOUND
epr6174.bin NOT FOUND
epr6173.bin NOT FOUND
epr6176.bin NOT FOUND
epr6165.bin NOT FOUND
epr6166.bin NOT FOUND
epr6172.bin NOT FOUND
epr6171.bin NOT FOUND
epr6170.bin NOT FOUND
epr6169.bin NOT FOUND
epr6168.bin NOT FOUND
epr6167.bin NOT FOUND
pr6177.clr NOT FOUND
pr6178.clr NOT FOUND
pr6179.clr NOT FOUND
ERROR: required files are missing, the game cannot be run.

GLmame v0.94 - the_peace_version , by Sven Goethel, http://www.jausoft.com, sgoethel@jausoft.com,
based upon GLmame v0.6 driver for xmame, written by Mike Oliphant

Thats the message with every game. There is no xmamerc on my system. Where can I get one? When I want to use xmame.scgalib I'll get a I/O permission error. But first of all, the emu should run the game.

Thanx!