Its a two step process.
First install the FLI software install kit that can be downloaded here -
http://www.flicamera.com/software/index.html
To run the install, right mouse click the install file and select 'run as administrator' first.
Then do the tweak in MaximDL to install the plug-in so you can get the RBI and speed changes.
If you're not interested in the RBI and speed change stuff, from memory you just need to do the first step. i.e. there is no dependency.