Logitech G600 Mouse Buttons

[On Holiday]

I currently have a Corsair M90 which is fine, but I'm wondering..

http://www.overclockers.co.uk/showproduct.php?prodid=KB-237-LG&groupid=702&catid=23&subcat=1257


Quick question about the Logitech G600.. Are they actually defined as "Mouse buttons", or do you have to assign the keys on the side to an already existing button/key.

I hope that makes sense but to give you a bit clearer explanation.

My current mouse has;
Mouse Button 1 - LMB
Mouse Button 2 - RMB
Mouse Button 3 - MMB
Mouse Button 4 - Left Side Button 1
Mouse Button 5 - Left Side Button 2

And after that about 7 other buttons, but my computer, and software (i.e. teamspeak and games) does not detect them as buttons, and they have to be programmed via Corsair software so they have another purpose

 

[On Holiday]

Mine are programmed as keyboard numeric keys for BF3/4 weapon select and skills in GW2.

So I assume you cannot bind, say G10 to a specific command in a game, unless there is already a keyboard button/mouse button 1 to 5 for that command?