Why not just use the PMDG 737NG sim for FS2004? Buy the CH Products flight yoke to make it more realistic It can be configured to the exact Ryanair NG setup. I used it for some sim work for another airline assesment and flying the PMDG sim first was very helpful, to say the least. Best part about it (unlike the other options) is that it's cheap, practice as much as you like and can be resold when you've finished.