How to specify location of boost_python-vc90-mt-gd-1_38.dll?

Hi,

I have no problems with compiling my boost.python pyd library.
When I try to run the python script that import the pyd library, I've got an error:

This application couldn't start because boost_python-vc90-mt-gd-1_38.dll was not found (...)

But this works fine if I drop this dll in my project directory. I suppose there is a way to avoid doing that and specify that this dll is in "C:\Program Files\boost\boost_1_38\bin.v2\libs\python\build\msvc-9.0\debug\threading-multi".

Probably through one of the jamroot, boost-build.jam, user-config.jam?
Anyone can help ? (I know this is a rookie question :-))

Thanks
-David