Logitech has released a really amazing update of their keyboard Game Panel Software (now renamed to Gaming Software) for G13, G15 and G19 gaming keyboards. Available for Windows XP, Vista and Windows 7 in both 32 and 64 bit flavors.
What's New
Added support for the Logitech Optical Gaming mouse G400.
Added support for the "Profiles To Go" feature of the G13 Advanced Gameboard, G19 Keyboard for Gaming, and Gaming Keyboard G510.
Added the "Test Profile" feature.
A customized icon can now be assigned to a game profile for display in the UI.
A "Search" feature has been added for profiles and commands.
Added support for "Profile Cycling".
Issues fixed
Various bug fixes.
Added in a few missing features from the previous release (detailed above in the "what's new").