I hope someone can help me out here !!! We are about to upgrade a 2nd site/office from exchange 5.5 to exchange 2000. The first office/Site is the original organization/site with an Ex2000 added into the original 5.5 site. (We added an EX2000 box and moved all mailboxes to the new box..) The original EX5.5 box has a site connector to keep us connected to the 2nd site (with a 5.5 box). We are now going to add an EX2000 box to the 2nd site. I am hoping I can get a little help on procedures for updating the 2nd site with Exchange 2000. Cfg looks like this: San Diego = EX2000 and EX5.5 boxes (W2K3 AD - Original Organization/Site) San Francisco = EX5.5 box...about to add EX2000 box in...(W2K3 AD) The two Sites/Domains are trusted domains with a Router to Router VPN connection (ISA).... What will I need to do to move the "connections" to the EX2000 boxes, while preparing to decomission both EX5.5 boxes? Can anyone give me some steps? Thanks in Advance !! Russell