the battery!
you have to remove the battery ASAP!!!!!
dont replace it,just remove it.
clean the surface with alchohol,and post some high res pics in here .it seems to be in a bad condition....
as for the extras,there seems to be a wrapengine ,with onboard scsi ,which you should use,and some that bridge card,which is useless.
have fun mate,that what your friend would want.
