Hi Leo and thanks for reply - i went round to get the disk from neighbour and we were messing about on his computer. he had installed the sp1 disk some time ago. i went to his start - my computer - properties and it was not showing that sp1 was installed. he ran the sp1 disk again and it still didn't come up after a reboot. I guess his sp1 disk is faulty and he never was aware of it so it's back to square 1.