What about the .NET languages?
C# / Visual Basic.NET
.NET Framework 1.1 SDK - Required
Visual Studio .NET 2003 - To be bought
SharpDevelop - Open Source IDE
C# Builder - Personal edition free for personal use
And Also...
Python
Official Python site
Perl
Official Perl site
ActivePerl - Another Perl build that can be installed on Win32.
PHP
Official PHP site
Eclipse - Actually a Java IDE but with good plugins one being...
PHP Eclipse - PHP Plugin for Eclipse IDE
And one more maybe...
Pascal
Free Pascal site
TMT Pascal site
Turbo Pascal 5.5 - Classic pascal directly from Borland. Also links to other development tools from their past.