Well, I know what I want to put together in my character background, I've made most of those decisions. It won't be till Monday that I get to actually putting a pen to it, and more than likely all day Monday will be doing homework. So I don't know how well I can squeeze in that soon.
Some basic notions of my concept are that my character is not currently associated with the church (I was reading the CotSF articles on the WOTC page, and I think it makes sense for my character to be more Paladin-like in his induction to the order). Hopefully I can give a little extra information out to the other characters Silver will be working with, and I'm taking a bit of liberty to do that below.
This is all information that Silver would speak of to trusted companions over a fort-night:
Silver was forged in Cyre, like many other warforged. Silver, however, was created with Mithral out of Thrane instead of Aundair. The mithral out of Thrane contained the impurity of a small percentage of flametouched iron. While his brothers were manufactured as powerful mithral clad warriors, he had a different calling.
Silver 67, or just Silver, is intent on going to Thrane eventually. At this point, however, Silver believes that he hasn't attained sufficient purity to fulfill his objective to speak directly with the voice of the Silver Flame. Thrane is the home of the largest enclaves of the Church, and it is in essence his "birthplace." He wants to go to Thrane, not just to see the mines where the metal that now plates his body was cracked out of the rock, but to see the leaders of the church.
Silver has never met a warforged priest or templar, and often wonders if he is the only one with the gift to find the gifts for divine magic. This influences some of his thoughts, and he has a wonderment that perhaps he is greater than just the metal and wood that makes up his body.
Silver is willing to do many dangerous things if he believes they could temper his body, mind, and soul. Because of this, he has developed a code of conduct. The code is simple, and consists of only a few rules. The most important rule being to sacrifice of himself for the betterment of others whenever possible. When he errs, even by accident, Silver tries to make recompense a hundred fold if necessary.
Some things that I think would work for our mutual background:
Telinor has his affliction, yet tries to press on against adversity. Since Silver has such a strong tendency to serve as a protector and to do as much good as possible even at the sacrifice of himself, Silver might see himself as the a brother in arms. Since both have idealogical and altruistic outlooks on life, they have a very strong chance of hitting it off just from a casual meeting. Since they both seem to be struck with the desire to adventure (Telinor in wanderlust and Silver in his pursuit to better himself), and since they both are unlikely to find friends in a more typical group, it only makes sense that they would congregate together. We could even take this the step further and say that a more experienced (and perhaps even evil) group of adventurers turned them both down in Sharn because of Telinor's condition and Silver's detached and unreactive nature.
With Ferrix character, it would probably be more of a connection of mutual iron-wills. Both follow different paths, but they both follow strict paths in thier training to get what they want out of thier minds and bodies. I'm drawing a blank on anything else, so I'll just wait for Ferrix to fill me in on Kor'bin.
I'm going to go back and edit what Hoabban says, so it makes a little more sense. You'll probably have to edit your response. Sorry. 
