Unfortunately, you are unable to use the X-men vs Street Fighter roms because they require a F PAL and you have a D PAL currently installed.
Potentional issues:
1. Bent or missing pins on the A or B board where they connect to each other.
2. I believe the roms were taken from an Orange CPS2...
You need to solder these points on the infinikey to get your version of the game to work. Also, make sure to remove the battery from the board before it leaks and damages your board.
I looked up your roms. Looks like you have the brazil version of the game. See link below for details on your version. You might need to install an infinikey.
http://adb.arcadeitalia.net/dettaglio_mame.php?game_name=sfz2b&search_id=
I have an earlier version of Street Fighter Zero Alpha (Asia) than the one found on any site, so I don’t think the key exists in the infinikey. I tried uploading the keys from the later revision, but they did not work. I submitted the roms to the MAME group so they have a copy of this version...