Editing registry in non-domain environment

Hi There!
Is there any possibility to edit registry settings on multiple computers in non-domain environment?! If so, I would like to do:
1.Change DNS Configuration settings
-Append parent suffixes of the primary DNS suffix
-Define DNS suffix for this connection
2.Disable a dollar shares
3.Hide Server name
4.Host file modification
5.All users to local admins

Or is there any good web site, where can I find all infos regards to my questions??
Many thanks

Regards
Jan