clean up / speedup media portal? (1 Viewer)

[remb0]

I have installed some mpi's but can't uninstall them.

vista: mp 1.0.1.0
by uninstall or reinstall i get: inlavid package.

Ho can I savely remove those unneeded plugins?

And it is possible to remove savely unneeded file like:
Tuningparameters
hauppage files (i don't have them)

Can it speedup media portal?? or is it useless?