If you have a guide scope to go with your DBK guide camera, then the next stage is to use something like PHD guide software and get a GPUSB module to allow the guide signals to be relayed from your computer to your mount.
Which scope/ mount do you want to control? Does it have a "guide port" (usually a ST-4 compliant)
http://www.store.shoestringastronomy...roducts_gp.htm
http://www.stark-labs.com/phdguiding.html