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Thanks for your help. We have several drives - Back up - G, Program files - D, plus a C with ME operating system that we don't use!! A friend we've now lost touch with set it up! Most with lots of space but the Program Files drive and we don't know how to change how much space to allocate to which drive! we have partition wizard but even if we knew what to do it's passworded and we don't know the password! We keep meaning to get someone in to sort it out and teach us housekeeping but you know how it is...!