Thanks to all who provided detailed information on how to get the Chelton updates.
I thought since I was updating the GNS430s in my fleet of Cessnas all it would take for the Chelton would be to open a new account and download the files.  It didn't work out that way.  With all the help I got from the users on the lml, I think I can now handle the job.  I have several 64Mb Smart Media Cards. 
I did check and the terrain database is the Aug. 2006 version and the nav data is 9/2006.   I also was under the wrong impression that all the new towers were in the terrain data and not the nav data.
I didn't write down the numbers but it appears that the terrain is for the western US.  I will check it against the sectionals or WACs tomorrow.
I will wait awhile on the nav data as I don't need the entire us until June or July and would like it to last farther into the future.  Unless I manage to get the IFR certification done before that.
Thanks again all you helpers.
Duane ES#39