Microsoft has released version 1.1 of the Visual Studio Extensions for Windows SharePoint Services 3.0! These are the tools that you use to build web parts, site definitions, etc. I don't find myself in Visual Studio 2005 as much these days, because I use Visual Studio 2008 as my primary development environment, but I thought that this was an important announcement and wanted to let you know.
Here's the download link: Click here to download
~ Robert Shelton