Here is a good list of MS compatible SSL and X.509 Certificate issuers.

AOL (http://www.aol.com)A-Trust (http://www.a-trust.at/)Arge Daten (http://www.signatur.rtr.at/de/providers/providers/argedaten.html)AS Sertifitseerimiskeskuse (http://www.sk.ee)Asociacion Nacional del Notariado Mexicano (http://www.notariadomexicano.org.mx/)Austria Telekom-Control Commission (http://www.signatur.rtr.at/)Autoridade Certificadora Raiz Brasileira (http://www.icpbrasil.gov.br/)Autoridad de … More