Easy way for users to share encrypted files

Hi all,

I'm trying to make an EFS rollout as easy as possible on my end users.
I've already created a GPO to put the Encrypt/Decrypt option in the
context menu but would like to know if there is an easier option for
users to add other certificates to their files.

We have a CA on a 2k3 domain with key archiving and users are
autoenrolled for certificates. If that helps.

What I was thinking is that if there was a way to put another entry
into the context menu that will open up the "Encryption Details" box
where they can click 'Add' to add more certificates for access.

Anyone know of a way to do something like this or another easy way to
allow users to share encrypted files?

Thanks in advance.