[Users] accessing console from firefox.

Dear All, I installed ovirt on centos 6 and able to configure it, and create guest etc. But the problem is I can't start my guest. I am accessing ovirt admin interface from my ubuntu machine and running firefox here. I tried it from fedora with spice plugin installed in firefox as well, but no luck. Can anyone please give me any pointer on this. Thanks in Advanced. Regards, -- Kumar Shantanu