Web Site for the Mexican Delegation to the OECD:

www.sre.gob.mx/ocde/
(in Spanish)

Government Sites:

Presidency (www.presidencia.gob.mx)
Official Web site for the President of the Mexican Republic.
(in Spanish only)

Government of Mexico (www.directorio.gob.mx)
A very comprehensive site, a portal to all government ministries and to a number of non-government sites.
(in Spanish only)

Other Sites:

INEGI (www.inegi.gob.mx)
INEGI provides geographic, demographic and economic information of Mexico. It also coordinates the Informatic Development Programme and provides the public service of statistical and geographic information.
(in Spanish and English)