another problem with earlier mame33 ( i did not think this was a problem with mame34 though) was that you are required to unzip the roms to a directory in the roms dir to get mame to recognize the roms "exist", i.e.(posted 9089 days ago)cd mame
cd roms
mkdir pbobble
cd pbobble
pkunzip ..\pbobble.zip
cd ..\..
mame34 pbobble