I will echo that sentiment. With the amount of ink spent on this so far, the hack up instructions could have been written several times over.
Has anyone tried the new .js file with NS6? Of course those functions will not work with NS4; it does not implement the same methods and properties for text areas as does IE5. When the vBcode hacks first came out, I found an excellent comparison of the two that explained just this point, but I cannot locate it, now.
As far as I know, that is the only difference between the two browsers, though.

(Just kidding, guys!)