HELP PLease Froze and cant work out

my macbook, its froze on a blue screen with a folder and a blinking question mark inside of that. all i can do is turn it off by holding power - when turned back on it is still the same. ideas??

G'day deficientsound & welcome to Mac-Forums

Put the install DVD in and reboot, holding the C key when you hear the Chime. Then navigate to Disc Utility and verify your Hard Disc. While there, you should also repair Permissions.

The blinking icon means the computer can't find a valid system it can finish the boot process with. Maybe you could try booting holding down the Option key. This forces your Mac to look in other places for the OS.

If that doesn't work, you can boot from the DVD like Pulse says and do the repair permissions and repair disk thingy. Looks like it just might need it.

cheers you two - will defo try that and let you know.