Hi There
It's hard to tell some one what is wrong with their computer when you can't see the screen. There are just to many variables.
When did it start to freeze up? After you installed a program? Or maybe a new driver for a sound or video card? Or maybe a printer.
If so uninstall the program or driver and see if this helps.
If you haven't all ready install Vista updates and see if that helps.
go here for an update for the zume player and other vista problems
http://support.microsoft.com/default.aspxHope this helps you out