concerning python-2.4.1.msi at win2000 sp4

After having spent quite some time at python.org to find 
out if I had to remove 2.4 before installing 2.4.1 (without 
any success, btw) I dared to start overinstalling. 

1. Unfortunately, I didn't recognize that the suggested 
directory was different from where I wanted Python to 
stay in. Now, there seems to be no way back except 
completele un- and reinstalling:

2. I run the installer again and selected "change Python 
2.4.1", then clicked "back", choosing the right directory, 
then went on  to "next" and on, but my directory choice 
was ignored.

3. Finally, I run the installer at commandline, specifying 
TARGETDIR, chose the "change Python 2.4.1" 
radiobutton ... and again, Python was reinstalled as if 
TARGETDIR wasn't given.

Paths containing spaces are not involved.