OLAP Security with Active Directory Information

[tapks]

Hi!

I want to use the Users & Groups of Active Directory of Win 2K in MS-Analysis Server. But in Database Role Manager Window of MS-Analysis Manager I can only acces the Users not the Groups. But I want to use the Groups of Active Directory as Roles in Database Role Manager Window of MS-Analysis Manager so that the users belongs to that group can access certain portion of the cube.

Basically I have certain cubes which has various dimensions for the Plant Manages & the CEO. I want that the Plant Manager can only able to access the data of the Plants they belongs, where as the CEO can access data of both the plants.

Can anybody help me in this regards? Can any body guide me how to use the Active directory in MS Analysis server for security purposes?

Thanks in advances.

Tapks