Issues Setting Up Users To Authenticate Via NT Group Into MSSQL

I have a NT Group of users that need to connect to MSSQL db using integrated auth and run a stored proc. I have got this concept to work for individual windows users but not a group.

Does anyone have any ideas?

(Win XP, MSSQL 2000 SP3, Windows Group = "SQLUsers", member is "User2")

--- TSQL ---

USE master
GO
sp_grantlogin 'pcSQLUsers'
GO
sp_defaultdb 'pcSQLUsers', 'theDB'
GO
USE theDB
GO
sp_grantdbaccess 'pcSQLUsers', 'SQLUsers'
GO
GRANT EXECUTE ON [dbo].[uspThing] TO SQLUsers
GO

-- Trying to connect with OSQL.EXE:

> osql -d theDB -E
Login failed for user 'pcUser2'.


BUT.....

runing it for the individual user:

---TSQL

USE master
GO
sp_grantlogin 'pcUser2'
GO
sp_defaultdb 'pcUser2', 'theDB'
GO
USE theDB
GO
sp_grantdbaccess 'pcUser2', 'SQLUsers'
GO
GRANT EXECUTE ON [dbo].[uspThing] TO SQLUsers
GO

---- now trying to connect with OSQL.EXE as User2:

>osql -d theDB -E
1> exec uspThing
2> go
3> data....

all is fine......

I can't use the user method - to much admin... any ideas!?

PK