If you are looking for a quicker response, perhaps try posting the same question on topix.com under the Jehovah's Witness forum. There are several eager witnesses who seem to congregate there.
Although I am a non-JW as well, I have had this discussion with them before. Here is what I would anticipate hearing, although I welcome correction from former or current JW's.
(NWT) Isaiah 45:23b says, " that to me every knee will bend down, every tongue will swear ". Romans 14:11 says, " for it is written: “‘As I live,’ says Jehovah, ‘to me every knee will bend down, and every tongue will make open acknowledgment to God.’” Phillippians 2:10-11 says, " so that in the name of Jesus every knee should bend of those in heaven and those on earth and those under the ground, and every tongue should openly acknowledge that Jesus Christ is Lord to the glory of God the Father."
What I would expect to hear is this...the three verses do not conflict with each other or prove that Jehovah is Jesus. In fact, you can merge the three together to say this...(R) "As I live", says Jehovah, (P) that in the name of Jesus ever knee should bend down (R/I) to me, (P) and those in heaven and those on earth and those under the ground, and (ALL) every tongue (I) will swear (R) and make open acknowledgment to God (P) that Jesus Christ is Lord to the glory of the Father. Therefore the verses work well together and also differentiate the Father from the Son.
It is easier to argue these verses when using other translations that use "Lord" in Romans 14:11 considering that verse 9 calls Jesus "Lord". But you will not go far with them using a translation other than the NWT.
There are many other Jehovah/Jesus correlations that will get you further than this one. I hope that helps.