Ok, here is what i want to do. I have an extra hd in one pc that not really being used. I want to take it out and move to another pc (both XP), do that is no problem. I want to be able to keep the info and programs on it but lock it out from the pc i want to put it in (in case i wish to put back into 1st pc again). Is it possible and what software will i need to accomplish this? Freeware if possible. Both are IDE ATA drives.