Once you hear the clicking it is too late to just change the boot or replace the grease, ur joint is shot. In most cases, expecially hondas/acuras, it is more cost effective to change the whole axle and they come fully greased and ready to go. Typically you will pay more for just the joint than you will for the whole axle (over 50% of the axle price is core charge which you get back) and the shop that does it also charges significantly less to do the axle. I guess what i'm getting at is the only choice u have to make is whether or not u do it urself. Get a reman axle.

Good Luck