Were I you, I would leave well enough alone.

On my system, the different
versions seem to have to be installed from bottom to top, and uninstalled
from top to bottom. So if you have plenty of disk space, just leave the
lower versions alone.
"Curious Don" wrote:
> I have successfully re-installed .net framework V1.1 V2.0 V3.0 and all
> necessary service packs and hot fixes on my windows XP computer.
>
> Question: Can I remove V1.1 and 2.0 using change/remove programs in the
> control panel or is V3.0 dependant on V2.0 being present and V2.0 is
> dependant on V1.1 being installed on the computer?
>
> Many thanks.
> --
> Don