Client Certificate with Vista

Hi,

We have a MS Cert Service installed on a MS Server 2003 machine. We use it to issue Client Certificates to web clients (IE6/7). This is working fine when the clients use Windows XP. The clients use the Web Enrollment to req client cert.

But when we try the same steps using Vista it does not work. All we get is a blank/empty list of Client Certificates to chose from when accessing the secured page. We have updated the Cert Serv to support Vista (How to use Certificate Services Web enrollment pages together with Windows Vista or Windows Server 2008). The CA certificate is under Trusted Root and the Client Certificate is under Personal, the same as on the XP clients.

What can we do to make this work with Vista..?
Any help would be greatly appreciated! Thanks!

(The closest I have gotten to a "solution" is this: no certificates listed for Vista - TechNet Forums
But this was posted in sept 2007, it must have been fixed since then?)

/R