How to create shortcut with two mouse buttons

[zzhumphreyt]

I'm still using Beryl on PCLinuxOS 2007, and I'm actually still a Linux noob, trying to make the switch from Windows. I absolutely love Beryl / CompizFusion!

Anyway, my question, and hopefully it's relevant to CF. In Beryl when I try to create a shortcut that uses two mouse buttons it doesn't take. Like I want to press Button1 and Button 3 together to initiate cube rotation. I've tried typing in "Buton1 + Button3", "Button1, Button3", and "Button1 - Button3" but none take. It would be so much more convenient for me to use the mouse alone to initiate cube rotation, no matter where I click. Is this even possible?

[coz]

Hey guy,
Ah in beryl if you put the cursor on an empty part of the desktop and click press the middle mouse button, the scroll wheel, you should be able to rotate the cube quite nicely with a great deal of control, this is also available in compiz fusion with the viewport mouse switcher plugins enabled.
Adding 2 mouse button clicks would mean that you would have to click one and then the other to effectively initate the cube however I dont think that is possible in either beryl or compiz fusion. Thats why in beryl you can use the middle mouse click and in fusion the plugin I mentioned.
Let me know if the middle click solves your problem.
coz