window roll up in 04 trailblazer

this is my first post here to take it easy on me. i recently installed a code ca-640 along with the gmmulti module from peripheral in my 04 trailblazer. everything is peachy. i would like to add a window roll up module for the front doors. Does anyone recommend a specific make and model? Better yet, has anyone ever done a window module in this particular car? This is probably a stupid question, but I suppose you cannot control the windows thru the databus can you? Im guessing that regardless of which module I go with, I will have to interrupt the wires at the switch? If anyone has a diagram of the windows in this car that would be great. Thanks.

bypasskit.com has a module that does windows up and locks.

are you talking about the dlgm1? really im looking for a simple stand alone unit. i already have the passlock/databus interface with the module i have now. anyone know if the windows on a 04 trailblazer are easy to interface with? a long time ago, i had a 90 s-10 blazer and all i had to do was interrupt the window wire(s) to install it. im hoping the trailblazer is just as easy? thanks