There are two ways to remove a tie rod. The easiest is to go buy a <A target="_blank" HREF=http://www.hand-tools-power-tools.com/automotive/separator.htm>tie rod separator</A>.
The other way is to loosen the nut holding the tie rod into it's tapered seat and back it off to the top of the threaded shaft(don't remove it all the way), grab the tie rod and pull down on it why sharply striking the outside of the seat, not the tie rod itself. You may have to do that three or four times before it finally pops loose.
When I say "strike sharply", think "karate chop" to the metal. The object is not to slam into the joint to move or dent the metal with the hammer. The object is to shock the metal until it releases the tie rod from the tapered seat. In this case, "get a bigger hammer" is not the way to do it. I think a 12 or 16oz ball peen hammer is about the best tool for the job.
