how to sssign user access to particular comapnies

Dear all,
I’m trying to assign user s to specific companies as below mentioned.
Scenario :
three companies : C1,C2,C3.
Users: U1,U2
Access for the companies to the specified user should be like this.


User

Access for the companies

U1

C1,C2


U2

C2,C3

I have created three domains and mapped to the User Groups and then assigned to the users but it failed.

Could you please guide me out on this?

Thanks,

Krishna

i resolved this …

see the details below link…

http://dynamicsuser.net/forums/p/65818/347604.aspx

regards,

Krishna