MOSS Search providers as feature
I managed to wrap both search provider into a feature so it will be easier to deploy them. The new feature includes a simple WebPart which displays link buttons for installing the providers.
Installation process can be viewed here:
The entire solution can be downloaded here.
In order to compile these files need to be copied into your Program Files/Netwise.
(The wsp file in located inside wsp/Debug folder inside the project)