21inch VGA Monitor MAME.ini question

[MKChamp]

I'm using a 21inch KRS monitor and would just like some assistance on how to make it look as good as possible. I know the best solution would be to put a REAL arcade monitor in my cab, but what mame.ini settings would achieve the best look? Most games appear very blocky (ie. MK's and the like) and I would like to make it more clear. I have a nvidia gforce 3 card and below are my settings:

### Windows video options ###
autoframeskip           1
frameskip               0
waitvsync               0
triplebuffer            1
window                  0
ddraw                   1
direct3d                0
hwstretch               0
cleanstretch            auto
resolution              auto
zoom                    1
refresh                 0
scanlines               0
switchres               1
switchbpp               1
maximize                1
keepaspect              1
matchrefresh            0
syncrefresh             0
throttle                1
full_screen_brightness   0.000000
frames_to_run           0
effect                  none
screen_aspect           4:3
sleep                   1
rdtsc                   0
high_priority           0