Extract the flrebalancemod folder (from the .zip file) to your Freelancer Mod Manager mods folder (by default it's in C:\Freelancer Mod Manager\mods).
Once you do that open the flrebalancemod folder. Go to Edit->Select All, then Edit->Cut.
Now go to File->New->Folder. Name the folder data . Open the folder, go to Edit->Paste (all the files you Cut should be moved here). Now you just have to open up FLMM and activate flrebalancemod :
Edited by - Khaos on 21-04-2003 20:40:04