Scott Yost talks about the certificate changes that we made in Windows Mobile 6:

It gives me great pleasure to announce the following changes that we made in WM6:

  • Certificate Installer built into the platform 
    • Installs CER, P7B, and PFX files 
    • No more Access Denied messages. 
    • Installs certs to the ROOT, Intermediate, and MY store
  • Wildcard Certificate support for SSL

Full post here.