Help - python headers question.

[Brian]

Hello.
I'm new to linux, just installed Mandrake 9. I have python 2.2,
however when i went to install pygtk 1.99.15 it failed configure and
said "error: could not find python headers." What does this mean and
how can i fix it? I tried reinstalling python, which didn't help.
Also, programs where i type python <filename> compile correctly using
the python engine.
thanks!