Whats the best way to hook up hardware inserts with a tdm when mixing?

I have mine hooked up to a couple of 882/20's.
OUT from the 882 to IN on your hardware (effect, compressor etc).
OUT from the hardware effect to IN on the 882.

The easiest way to do it is to use the same number output and input on the Pro Tools interface (in 1 and out 1 etc) to the same hardware effect.

When the wiring is done, use "I/O Setup" and the "Inserts" tab to define what's plugged in where.
When this is done your hardware should pop up in the same menu as your TDM and RTAS plugins.