Integrated Windows Authentication

Hi,

I have implemented Integrated Windows Authentication for Enterprise Portal. I installed iis in my local machine.And i have created a new user in the portal as in my same NT user. It was working fine if i login from my system i was able to login into the Enterprise portal without sepearte Login for Portal. But when i try to login using Other NT user from different machine it's not working(I created a new user in portal). It's Prompting UserID and password. Even if i enter that other NT user ID and password it's not working. I tried to give the Administrator privilege on my machine(Where IIS is installed) for that UserID then i tried to login with that user from his machine. Now it's working fine without promting UserID and password i was able to login into the portal. I know this is not the right solution for this problem because i can't give the administrator privilege in IIS for all the users.

Please help me out....

Regards,

Vasu