How to grant access to SCCM and Remote Control

I need to setup a group in SCCM 2007 with access to the console and Remote Control to PCs.  
I created a group in with the following permissions
 
Collection:  Read, Use remote tools, Read resource
Package:  Read
Query:  Read, Create
Configuration items: Read
 
When the users try to launch the console they get the following error: 
The ConfigMgr console could not connect to the ConfigMgr site database. Verify that this computer has network connectivity to the SMS Provider computer and that your user account has Remote Activation permissions on both the ConfigMgr site server and SMS Provider computers. For more information, see "How to Configure DCOM Permissions for Configuration Manager Console Connections" in ConfigMgr Help.