arcade VGA and windows.. curled?

[delta88]

well I have an arcade vga and it is hooked up to a jpac and then to the wells gardner 25" like a k71....  but now if I adjust the screen so that the vertical holds in windows when I start a game it flips and ok well I can adjust it to play some games.. but now the games play and fit the screen nicely but when I exit back to windows the bottom of the picture is "curled" at the bottom.... or it kinda looks bunched up.. is this a driver problem or is the monitor not compatable? its kinda wierd.. I had a heck of a time setting up the last one...

thanks for any help
thx

[Minwah]

Does the v-hold need adjusting?  Perhaps the image does not quite 'settle' in the correct spot.  Try tweaking the v-hold VERY carefully - it may need a clean if the monitor is old.