Welcome to the Visual Studio blog by Jose Chajon
Here you will find a chart containing a side by side feature comparison
http://lab.msdn.microsoft.com/vs2005/productinfo/productline/default.aspx
Keep an eye on this: http://commnet.microsoftpdc.com/content/downloads.aspx
How to blog with Infopath 2003 http://blogs.msdn.com/guowu/archive/2004/07/20/187990.aspx
And if you want to work with VS 2005 go here http://blogs.msdn.com/infopath/
Introduce your Indigo Bits!
http://pluralsight.com/blogs/kirillg/archive/2005/10/05/15339.aspx
I found this very interesting
http://blogs.msdn.com/markhsch/archive/2005/10/06/478042.aspx
The windows Vista developer center contains the basics on WWF WPF WCF
http://msdn.microsoft.com/windowsvista