Can i ignore the bit about Repair and delete the main C Drive partition and reinstall Windows as you would normally? Or will this render the PC useless?
In this case the PC has a copy of XP in the hidden partion and will run setup from there rather than an XP CD.
If you do a REPAIR it will leave user fles.
If you do a format C: and do a new install it will lose all user files.
If you delete the partion you may also lose the recovery partition and therefore your copy of XP., and have nothing to instal from.