I did a little research on this, and this is true. The Douay Rheims has changed the following (from the AV):
"Thou shalt not bow down thyself to them, nor serve them"
"Thou shalt not adore them, nor serve them"
Not to open up a can of worms, but rather to give deeper truth, the Latin Vulgate, which has been the Bible that the Roman church has leaned on in centuries past and today as well, has the Latin word "adorabis." The Hebrew word "Shachah," however, is the original word, which was translated: bow down, worship, crouch, stoop, reverance, fell down, or obeisance.
Here are the first two commandments according to Catholic teaching:
1. I am the Lord, your God. You shall have no other gods besides Me.
2. You shall not take the name of the Lord, your God, in vain.
...and the last two:
9. You shall not covet your neighbor's wife.
10. You shall not covet anything that belongs to your neighbor.
After studying much on the Catholic teachings, I would recommend to search for truth, but remember that all the commandments of how we are to treat our fellow man apply to how we should treat Catholics. I did so much reading and research on the Roman teachings that I spiritually isolated myself from Catholics. I got suspicious of neighbors, etc.
As a rule of thumb, I try to speak to lost people the same regardless of their beliefs. We should speak to Catholics as we would have wanted someone to speak to us when we were lost.
I don't think I have ever heard of any getting converted because someone was impressed with a Christian's knowledge of another teaching, but at the same time, just speak the truth, always in love, "pulling them from the fire."