Sure thing,
1. Install Freelancer again.
2. Download and install the FLMM ver 1.31
here
3. Download and install the SDK
here
4. Download the JediStarfighter mod
here
1* Okay, now you have all the files you need. First up - install FLMM ver 1.31. Double click on the exe file that you downloaded, and let it automatically install to its default directory (which will be C:\program files\Freelancer mod manager\)
2* Once that has been installed - you should then see the Jedistarfighter mod as a little white square icon, with a small freelancer helmet and some red in it. Double click on that, and it will auto-unzip itself to the Freelancer Mod Manager directory.
3* Now you can double click on your FLMM desktop link icon - and then double click on the name of the mod you wish to use in order to "activate it" - or you can install the SDK.
The reason I say this is because the installation of the SDK is voluntary. You do not need it to play the mods, its just that some people experience some issues with activating mods due to errors saying "blah blah target destination not found" (or something similar).
IF you want to install the SDK - you will do it BEFORE step 2*. So following above, do the 1* - but then do this part to install the SDK.
Double click on the Exe file - agree to the whatever, and it should come up with your default FL's data directory. If you didn't install it to that location - or if you are unsure - then browse to the location of your data folder. So if your Freelancer is on D: for example, browse to D:\program files\microsoft games\freelancerIt installs to a data folder by itself. If you click on the data folder whilst browsing to the install location (ie Freelancer\data), it will then create a data folder INSIDE of that data folder - so stop navigating once you have the Freelancer folder selected
Then resume from 2* above.
Hope that gets you going.