If your hands are being tied a little by Corporate then I think the best solution is to do as Radimus suggests until such a time as you go to AD or Corp allows you to do it another way.

Using an account that has local adminstrative rights (Domain Admin or similar) then using a text file or .INI file that contains all of the systems you want to manage.
Then setup all the registry values you want or need (that is all policies are mainly anyways) then run a remote script against them.

Ping the system or other to confirm it is online, then modify. Once the script is working well just schedule it to run everyday looking for these clients and updating them.