Delphi 2005: Use only the Win32 part?

Well, if you want to do this, you CAN. And this page gives you step by step instructions....so if you're anti .NET, go for it.

More useful, in my opinion is to use that in conjunction with Corbin Dunn's article on how to use the /r command line option in Delphi. Try it - you can set up a completely different IDE if you like, and one for Win32, and one for .NET. Btw, all of that works with Delphi 7 too, as I recently found out.