Many have been led to Christ by someone using other versions. I once spoke with a man who vehemently claimed that the Good News For Modern Man was the infallible Word of God because someone had led him to Christ using it. Wrong! His getting saved through a Good News For Modern Man did not correct so much as one of the many gross inaccuracies in that version.
I have a friend who believes the Bible (KJV) to be the infallible, perfect Word of God. Yet he himself was led to Christ by someone using a Living Bible. Did the Living Bible become the infallible Word of God the moment he believed? Of course not. It never was perfect and never will be. But if it did become perfect because he got saved through it, would it not have lost its perfection when he chose to use the King James?
So we see that the Bible, King James of course, is the infallible, perfect Word and words of God regardless of what someone used to lead you or me to Christ. In fact, it would still be the perfect infallible Word and words of God, even if we hadn't gotten saved at all.