Hi JZ,
VMware has changed the way the servers (vcs, vss, composer, vcenter, etc) communicate/haddle certificates in View 5.0 and newer. That has became mandatory.
You can start by having a look at this documents:
Understanding SSL Certificates for View Servers
Obtaining SSL Certificates for VMware View Servers:
http://pubs.vmware.com/view-51/topic/com.vmware.ICbase/PDF/view-51-obtaining-certificates.pdf
I hope it can be helpful.
Cheers,
Elcio