python cryptography toolkit installing problem

[Benjamin]

hi

i tried to install the python cryptography toolkit, but got this error
msg:

error: command 'cl.exe' failes: No such file or directory

i copied the contents of the toolkit package into the python
directory, went to the dos shell, there to the python directory,
and typed

python setup.py install --prefix="\Temp\Python"

where did i go wrong?

bye and thanks