Welcome aboard tanky-sailor guy
There is a JSGME thread stickied in the SH3 Mods forum (and I'd guess in 4/5's as well). It is an invaluable little program that adds/takes off mods as you see fit, warns if there are any conflicting mods - in short, it's fantastic, saving a lot of trial and error and heartache!
If you've got 4/5, you may as well get 3 as well