Thanks!
When I run the optimiser, my server hangs completely. It manages to stop the exchange services, then it says it is going to do a check of the hard drives. It gets about 30% through and hangs completely.
There is only 65MB left on the C drive, but loads on the other drives (hence me wanting to move the database!).
Do you think the lack of space is the problem? any other suggestions?
Many thanks again, mark