We have a Citrix Presentation Server 4.5 environment. We use Word & Excel Viewers for the users that don't have Office 2007. Each time they go to open a word or excel document it trys to install a program. I have done the right click / choose program / always use thei program to open this kind of file. This doesn't stick and keeps trying to install every time. I have made sure that they are a member of that published application and have permission to that folder. It does finally open after a few seconds. Any help would be appreciated.