No, these are not the Mexican Census records.  The only place I have seen 
census records for Mexico has been through LDS.  There is a book published by 
Lyman Platt that gave much information on where you could locate census records 
for Mexico.  It is probably listed in the Library Catalog in Salt Lake City.

I was referring to US Census records on CD.  Heritage Quest has done an 
excellent job and I have enjoyed tremendously what I purchased for counties in 
Texas.  I did notice today as I looked through what is available for Texas that 
immigration records found on microfilm are available on CDs.  Alien cards for 
those passing through Eagle Pass are on CD.  I am interested in those coming 
through Roma and Brownsville, but those were not included in their listing.

website address:  www.heritagequest.com/ 
Mira

<< is this for the Mexican Census? What years are available and what is the 
 cost? What is their website address? >>