yes, there is a trust between the domains, in fact the folder was shared for two days, until one morning when stopped working. i'm trying to assign ownership and permissions but i cannot find the user from the other domain(the user that will have to access the folder). i don;t know what you are talking about the user domain in the dialog box. i;m looking forward for your answer. thanks
When you add a user to file rights, the default search is your current domain. Sicne the user you are adding is on a different domain, you need to change the location for that user account. If you look at the add user dialog, you will see a "search in" place where you will find your domain name.