Chrome policy templates questions

Hello all,

I've two questions regarding Chrome policy templates:

1) I want to password protect Chrome extensions like "Public Fox" addon in Firefox. But since there's no extension of that sort in Chrome, I am only left with Chrome policy templates option. The problem is trying to prevent users from uninstalling/disabling the already installed extensions Has anyone successfully configured the option "Configure the list of force-installed extensions"?? If yes then please help me out.


2)I've used "Whitelist for Chrome" extension to use Chrome to visit only limited sites. But off late its not letting me use chrome at all. Hence, again, my only hope is Chrome policy templates. The description in this link has not worked for me [link]http://www.chromium.org/administrators/policy-list-3#URLBlacklist[/link]

If you know of any solution outside Chrome policy templates then they are welcome as well.

Thanks.