Hey jjwhite29 welcome to our neck of the woods. We would love to have you help, especially in your area as I don't think we have anybody there currently!
The only scanners that I know support Unitrunker out of the box or are GRE variety. However, there are many that will support it with a small modification. Personally I run mine on a Radio Shack Pro-92. The modification is VERY easy and I found the scanner used online at a VERY good price. It has some broken parts like the screen and the speaker so it was way cheep, but for Unitrunker I don't need either of those.
The Modification I am talking about is to add a discriminator tap. You can get some info
HERE about it and links to a few scanners and how to modify them. Basically all the discriminator tap does is give you a very clean audio line out of the scanner. You then take that into the MIC lin in your computer and you are up and running.
If you have specific questions, please post them and one of us will try and answer back...
I forgot to say that the scanner you use for Unitrunker doesn't even have to be trunked. It just needs to be able to tune to the control channel and have the discriminator tap.