There are two installers depending on whether you are running WMM 6.0 on a 32-bit or 64-bit version of Windows. The installer will put the necessary files into, C:\Program Files\Movie Maker\Shared.
Windows Movie Maker 6.0:After installing, you'll have the new effects the next time you start up Movie Maker.
Blaine's Bloom and Negative Effects (32-bit)
Blaine's Bloom and Negative Effects (64-bit)
If you have any questions on these effects, feel free to post in the forum topic on the Bloom and Negative Effects