This should help you out:
Forms with VBScript do not work with Terminal Services in Outlook 2002 and in Outlook 2003
If Outlook XP is installed on the Terminal Server, nothing happens when the user double clicks on an archived item to attempt to view it.
See this article for details of the problem and solution: http://support.microsoft.com/default.aspx?scid=kb;en-us;302003
Excerpt below:
Method 1: Copy the Outlvbs.dll file to existing installations
To do this, follow these steps: 1. Copy the Outlvbs.dll file from a computer that is not running Microsoft Outlook 2002 on a Terminal Server.
2. Copy the Outlvbs.dll file to the \Program Files\Microsoft Office\Office10 folder of the affected Terminal Server computer.
Note If the Terminal Server is running Microsoft Office 2003, copy the Outlvbs.dll file to the \Program Files\Microsoft Office\Office11 folder.