Hi,
Athough I almost never comment on anonymous questions, you are obvious new to the PSR 2000.
After inserting your disk:
Press button D - style
The screen shows you the preset styles folders
Press button NEXT and that will take you to the USER area that will show styles in this area (if there are any saved here)
Press NEXT again and that will bring you to the styles on the diskdrive.
Make you choice with buttons A to J (or even go to P2 3 4 etc) and that will load the style.