Built trust / access denied

Hi,
I setup a trust between a windows nt4.0 domain and a windows 2000 server domain. On the windows nt4.0 server, I go into user Manager for domains and Select the other windows 2000 domain, I could see some but not all of the users from the other domain. When I try to go into the properties of one of the users I get access denied. I’m not sure how to resolve this. Any help would be appreciated. Thanks in advance