Dude, the RDB (Rom Data Base), Only displays the Messages in the Rom Browser. It doesn't do anything with PJ64 but lets people know if the game runs on the emu or not...
arent there the settings for each game, example:
[58FD3F25-D92EAA8D-C:50]
Good Name=1080 Snowboarding (E) [!]
Internal Name=1080 SNOWBOARDING
RDRAM Size=4
Counter Factor=Default
Save Type=First Save Type
CPU Type=Recompiler
Self-modifying code Method=Check Memory & cache
Reg Cache=Yes
Use TLB=Yes
Use Large Buffer=No
Linking=Global
Status=Compatible <- shows up in the browser
Resolution Height=240
Plugin Note=Internal T.:shadow <- shows up too
Yes, it also stores what _should_ be the best game srttings. Try the game, it probly won't work, but you never know. But why ask on the boards? It's so much eaisier to check it yourself.