site-packages and linux

[Raaijmakers, Vincent (IndSys, GE Interlogix)]

Currently in my linux configuration there seems to be a conflict in my python2.2 and 2.3 install.
I installed recently 2.3 but want to go back for some reason to 2.2.
All installed packages located in ...\python2.2\site-packages are not recognized anymore.
Well, when importing is not possible, no <foo> module found error is what I get now.

Without re-installing everything, how can I solve this problem?

Vincent