This is really a two part question.
1 - What is FSUIPC4 and why would I want it? I picked up the iFly 747-400 package on avsim and it has a FSUIPC4 zip file that will need to be installed for the package to work correctly. Before I install it I could use some feedback about any side or adverse effects.
2 - Anybody tried the iFly 747-400 package yet and if so, got any comments?