This player seems to be favored by people looking for a low cost solution for a region free player. Not exactly sure what you mean by properly as the only way that you will be proper PAL is by playing on a system that handles PAL natively with a PAL display.
I am using a Home Theater PC with an X1 projector and can watch 100% PAL or NTSC as the projector supports both resolutions natively.
More info on your player at link below. Seems that the 300 and 320 are the same player, but the 320 is a Target exclusive brand.
Cyberhome CH-DVD 320 Info