Visual Studio 2005
Visual Studio is the powerhouse IDE for Windows development.  Your your going to be creating Windows applications, you better invest in Visual Studio.  Visual Studio will be released in November of 2005, and promises to bring some great improvements to the Visual Studio environment.

From Running the beta, I would have to say that one of the coolest new features of Visual Studio 2005 is the built in web server for testing and debugging your ASP.NET pages.  One problem that I have right now, however, is that I don't know what the login / password is for the web server, thus I cannot test my pages in FireFox at the moment without deploying my pages on IIS.

XML comments for VB.NET
Finally, Microsoft has given us VB.NET programmers the ability to create XML comments for use with intellisense.  This has always been a shortcoming of VB.NET compared to C#.  I always hoped that in the next version, they would implement this, and horray, they did.  You can create XML style comments for intelisense in Visual Studio 2005 by entering three quote marks:


This will create a summary, remarks, and if you have any parameters for the function, parameter definitons.  This can be really helpful espically if you are creating many overloaded functions that you have to keep refering back to.  Way to go Microsoft.

Another great feature that I have discovered in Visual Studio 2005 is the ability to close all open files except the one your currently editing.  This really comes in handy when your open file list gets out of hand.