PSA: Please do not suggest going physical2virtual or anything with virtual machines in response to this questions. This questions is explicitly not about doing such stunts.
Now that I have your attention

I have a Ubuntu Lucid PC running Wine with programms installed.
I also have a fresh Ubuntu Precise PC with fresh Wine.
I'd like to move all the crappy Windows Programs from one machine to the next, so I can dispose the old machine.
Is it sufficent to
- copy "C-drive" over and
- drop the registry on the old machine and import it on the new?