So far no real help for the OP....

You will need an INCH pounds torque wrench and some carbon paste. You can get the carbon paste in a large tube (which you will then have laying around forever with no other use) from your LBS. You also need to go to the bar mfg's site and see what the bolt specs are for your particular bar. This is usually around 4 NM which is about 35 inch pounds but you MUST check your mfg's specifications - don't just guess.

Chart for NM to inch pounds:
http://www.thetoolhut.com/Torque-Con...ch-Pounds.html

Coat the bar where it mounts inside the stem plate and put it into the Stem. Run in the bolts finger tight and adjust the bar to be centered and in the proper position. Using the torque wrench tighten the bolts in a cross pattern until tight. If it's a 2-bolt plate, tighten each bolt a little bit and then do the the other one then come back and tighten the first one a bit more and continue swapping back and forth until the bolts are tight. You want to draw the plate tight in an even manner.

DO NOT FORGET THE CARBON PASTE! It's really nothing more than sand in silicone gel but it's really important.