Are you trying to install a demo, or just build an appliance for testing?
The appliance build files are on the ftp site. The ftp site is listed on the support portal, under
my account -> my company.
The files would be in the /Downloads/SecureSphere_Setup/SecureSphere_v13/SecureSphere_v13.6/patch30/VM/
Copy the vmdk and ovf file. Then in vSphere, you can create new and build from those files.