How to get my lisence back?

Hi,

I have two hard disks in my desktop, SW08 is installed in defaultdirectory in System drive. This morning, when I start the machine,Windows XP reports me the second hard disk is damaged (ignore it I'm still able to start XP), later I replace the disk with a newone.
Then SW cannot be launched, error information is "the configurationof my machine is changed" (likely to be that), asks me to activateagain, but never succeed.
Can anyone here give me a hand?
SolidworksAdministration