Is there a definitive list anywhere of all the emu's which support this...

I would like to if possible create shortcuts so i can split my roms into groups regardless of it's system.

but i don't know what emu's allow it....it's scattered about but I can't find all the info in one place...

pretty much all of xports emu ports support this and fbaxxxpro.
surreall64xxx and mamex,mameox,mamedox,mameox128plus and coinops dosent support it.

PCSXBox "technically" supports it (in that you can launch games), but for some reason it always boots to HLE instead of BIOS mode (regardless of your settings for that particular game) - and HLE mode works with very few games indeed.

You can now add Surreal64 to the list. Using Surreal64xxx_B5 along with the patched default.xbe which can be snatched off Xbins along with your .cut in this format:

<shortcut>
<path>F:\Games\The Best\NINTENDO\Nintendo64 - Surreal64xxx_B5\default.xbe</path>
<label>Tetrisphere</label>
<thumb>F:\Emulator Icons\Tetrisphere (E) [!].png</thumb>
<custom>
<game>Tetrisphere (E) [!].z64</game>
</custom>
</shortcut>

You can now run Ninty64 games by shortcut. Thanks to Ez0n3 for all his hard work on the project. I know we all appreciate it more than we've let him know!! =))