I recently installed InstantRails (http://instantrails.rubyforge.org/wiki/wiki.pl) on one of my laptops. Instant Rails is part of the Ruby on Rails (http://www.rubyonrails.org/) movement. It is an extremely easy way to get a fully functional Ruby on Rails development environment installed on a windows machine. You simply download the archive, unzip it wherever you want, run a single .exe and you are done. The installation comes with PHP, phpMyAdmin, MySQL, Apache, and of course Ruby and the Rails environments. This is the easiest combined web development environment install I have ever seen. I have used Xampp, the saint, etc. and this one beats them all for ease of installment. Not too bloated either.
I pulled down one of my production drupal sites, dropped it in the apache directory, adjusted the settings file and it came up in the browser the first time. Very easy and you get to play around with ruby to boot.
Thought this was so easy that it might appeal to some in our ranks. While I am pushing products, I am also using PHP Designer 2006 (http://www.mpsoftware.dk/) a really great FREE editor. Also handles HTML, CSS, XML, JavaScript, VBScript, SQL(various flavors), Perl, Java, C#, Multi (syntax highlighting for php, html, css, xml, and javascript in a single document). Really great all around editor with a very small footprint.
Just thought this info might be useful to some! Cheers!