"limited" Full right

Hello,

I use windows server 2008 and in the Computer Management from the local users and groups, I have a group called "administrators" (Administrators have complete and unrestricted access to the computer/domain).

I would like to do a clean up from those admin accounts. However, if I remove access to one user, that same user can request to be granted full admin right to one of his colleague..

So I would need your help to create 3 groups:

1) Full admin account as it is already locally on the server

2) create "limited" admin account that would not be able to grant access to other users.

3) group to only read info or consult //server/ etc..

Thank you in advance,

Graig