La resolucion creo k esta bien,mira esto es lo k tengo.
### mamewah.ini (mamewah v1.61) ###

### (Global) Screen-Saver Options ###
delay 300
slide_duration 3

### Audio Options ###
enable_sounds 1
sound_volume 100
music_path C:\GAMES\mamewah\audio
enable_music 1
music_volume 100

### Movie Options ###
intro_movie_file
exit_movie_file
keep_movie_preview_aspect game_aspect
delay_before_movie_preview 2
music_movie_mix mute_movies
movie_volume 100

### Misc Options ###
layout classic 800x600
ctrlr
wrap_list 0
remember_current_game 1
keep_image_aspect 0
refresh_images 0
correct_orientations horizontal
safe_mode 0
show_cursor 1
keyboard_led_states -,-,-
winipac_file
mamewah_ipc_file
lcd_com_port 1
lcd_settings
exit_action choice
app_to_run_on_exit

### Settings used by MAMEWAH ###
current_emulator neogeopocket
locked 0
last_ipc