trust problems?

[Guest Johan deheugden]

guys,we got 2 companys.there is a fuollt rust between both company's

ad.company is in w2003 native mode,company 2 is in native w2000 mode. when i

want to add users from company 2 to my folders, i need too use a universal

groups cause universal groups are the only groups company 2 can see.can some1

explain this?

thanks in advance.