I've had a number of folks ask me questions about VSTO integration both with Office 2003 as well as with the upcoming Office 2007. There are a number of people on the VSTO team blogging, so I figured it would be worthwhile linking to them here:

Additionally, there are two people from the Office programmability team blogging right now:

So if you have any questions about VSTO or programming in Office, you should definitely check out those blogs. If that doesn't work, you could also try:

-Brian