Certutil.exe can be found in Windows Server 2003 or Windows Server 2003 Administration Pack.

Following command and parameters can let you to query certificates stored in Personal Certificate Store.

That is very useful if you want to verify if user certificate deployed to user computer or not.

certutil -store -user My

Other Certificate Store reference information:

http://technet.microsoft.com/en-us/library/cc787544(WS.10).aspx