This morning when attempting to lower the front passenger window I heard a sickening crunch. Immediatly stopped the window and flicked the switch to 'up'. Just a whirr!...

Window didn't move at all. Tried again, crunching on what would be the way down and a whirring on what would be the way up.

****! Is this going to be a ball ache of a job and cost me a kidney?

Any ideas on what the problem could be?