Problem installing Scitools with "Pyzo"

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What steps will reproduce the problem?
in the Install Guide it says:

"Use the --prefix option if you want to install SciTools into a different 
location. However, in this case you also have to update the PATH and the 
PYTHONPATH environment variables to reflect this directory."

QUESTION1:
Where do i change PATH and PYTHONPATH (what are these?)
in my case i have installed "pyzo" here C:\pyzo2013b...
QUESTION2:
where do i put "--prefix"

-Can you make an example what the command would be in my case in "cmd"

What is the expected output? What do you see instead?
nothing

What version of the product are you using? On what operating system?
Windows 7 64bit

Please provide any additional information below.
the installation fails also via "pip"
see attached file

Original issue reported on code.google.com by [email protected] on 17 Oct 2013 at 9:20

Attachments:

• [pyzo_scitool problem.jpg](https://storage.googleapis.com/google-code-attachments/scitools/issue-29/comment-0/pyzo_scitool problem.jpg)