Many thanks for the replies and suggestions.
"Drive enclosure"...no idea what it is! Easy process?
There will be no need to have the old drive as a "bootable" one.
It seems that the change of the jumper from master to slave will work.
Thanks to you all.

"Tiago" wrote:

> Hi,
> I am changing my computer, upgrading fron an P III 800 MHz to a P IV 775 3.2
> GHz.
> I wonder if it is as simple as to connect the old hard drive to the new
> computer and start using it...
> Is it?
> Can I use my old hard drive on my new computer without any procedure? Will I
> keep, for sure, my data (135 Gb of it...)
> Thanks in advance.