For #2, in the compiz settings manager look under preferences and select export to save your settings to a file, maybe in your /home directory; then merely select import when you get your new installation and choose that file.
Can't help you on #3 as I use VirtualBox over VMware.
"The Second Amendment isn't about protecting ourselves against criminals. It's about all of us protecting ourselves from all of you." ---Dr. Suzanne Gratia Hupp to Congressman Charles Schumer (D-NY)