Ahh. So coveting would be wanting something so much that I'm willing to steal it or something?
More or less.
"To feel blameworthy desire for (that which is another's)."
There's more to it than simple desire, anyway --- unhealthy desire, such that you sacrifice that what is good and moral to satisfy the desire.
To me, the commandment links back to "no other gods before me."
The lower-case "gods" in this context does not merely mean some false god one might worship, but also something one obsesses about (covets) and becomes, to you, more important than God --- a "god" could be money, sucess, power, women, NASCAR, whatever.
As an aside, the most mis-quoted commandment is the one that says "Thou shall not murder." It doesn't "not kill." There is a distinction there.
The Biblical covet is to want something without giving value in return for it and whether or not your neighbor wishes to part with it. Coveting leads to theft and decrees by rulers and all sorts of other unpleasantness.