I haven't totally discerned a pattern yet, but sometimes when I open an Office 2000 (mainly excel) document My computer will have to go through a Microsoft Visual Studio 2005 install procedure before my document will open. I have to drag out the VS2005.NET disk to let it procede through this install procedure before my document will open. Anybody heard of this? My setup - XP sp2, Office 2000 professional with Outlook 2003 installed, Visual Studio 2005 Pro with SP1. It didn't seem to start until I installed SP1 for VS2005.