When doing ./configure , i get an error , the error is:

"
checking for /usr/include/python2.3/Python.h... yes
checking for pkg-config... /usr/bin/pkg-config
checking for pygtk-2.0 >= 2.4.0 pyorbit-2 >= 2.0.1 gnome-python-2.0 >= 2.6.0... Package ORBit-2.0 was not found in the pkg-config search path.
Perhaps you should add the directory containing `ORBit-2.0.pc'
to the PKG_CONFIG_PATH environment variable
Package 'ORBit-2.0', required by 'PyORBit', not found

configure: error: Library requirements (pygtk-2.0 >= 2.4.0 pyorbit-2 >= 2.0.1 gnome-python-2.0 >= 2.6.0) not met; consider adjusting the PKG_CONFIG_PATH environment variable if your libraries are in a nonstandard prefix so pkg-config can find them.
"

I did locate ORBit-2.0 , but i cant find it , what should i do?? I am using debian sarge.

What I have done is apt-get it to pull in all the dependences and then if you want to install from source remove it with apt and try to install from source again.