[idvusers] Using shape files with Texas state plane projection

All,
I am attempting to overlay some data on maps produced by our regional mapping 
authority.  When I open the files in IDV I only have a line. 

How do I get IDV to recognize this file, if possible?  

I have been working with the projection setting but nothing has worked.  I am 
assuming this projection is not one IDV can ingest.


http://www.pdnmapa.org/HTML/about.html

The maps are shapefiles.  Here is the info from the .prj file

PROJCS["NAD_1983_StatePlane_Texas_Central_FIPS_4203_Feet",
GEOGCS["GCS_North_American_1983",
DATUM["D_North_American_1983",SPHEROID["GRS_1980",6378137.0,298.257222101]],
PRIMEM["Greenwich",0.0],
UNIT["Degree",0.0174532925199433]],
PROJECTION["Lambert_Conformal_Conic"],
PARAMETER["False_Easting",2296583.333333333],
PARAMETER["False_Northing",9842500.0],
PARAMETER["Central_Meridian",-100.3333333333333],
PARAMETER["Standard_Parallel_1",30.11666666666667],
PARAMETER["Standard_Parallel_2",31.88333333333333],
PARAMETER["Latitude_Of_Origin",29.66666666666667],
UNIT["Foot_US",0.3048006096012192]]

Thanks
Roderick