Software Deployment

Hi,

Has anyone any experience of working with Certificates for Citrix? I am packaging an application, URL with activeX Components, which requires a certificate. When we get the user to log in via the Citrix session the certificate is not there and as such requests it. What I am trying to find out is what exactly does a Certificate contain? Is it possible to just place registry entries and place files in a elevant area to replicate what would happen with a certificate? Does anyone know is it registry+files and if it is possible? We can apply the registry and files through log-on scripts if it registry+files that is involved. Vendor is not the most helpful type! Any ideas? Thanks in advance