The Vatican had different stances on the crusades at different times.
The crusades themselves were just and unjust at different times and circumstances.
I would suggest reading about St. Francis of Acici.
He was a Catholic monk who was well involved with the Crusades and his story exposes allot about the relationships between the two religions and the different countries and politics.
I wasn't lying when I said it could take quite a while. Remember that I single handedly run an entire gun parts manufacturer, and I just invented a new handgun mechanism which I am putting all of my spare time and energy towards patenting, so now, it could take even longer.I'm still waiting Cannon.
Alex Ivanov last post says it all.