Can I install IIS 6 or 7 on a Windows XP machine?

Question

I've heard that this isn't possible because you need to have the Windows Server OS installed, but that seems kind of ridiculous because how would you set up a local development environment? Anyway, curious if this is possible.

Answer 1

Exlcuding Windows Server OS', IIS6 needs Windows XP Pro 64-bit and IIS7 needs Vista.

A thread on the Microsoft IIS website also says you can, as 64-bit WinXP Pro comes with IIS6.

Answer 2

This page says you cannot.

EDIT: Clarification: kernel-wise Windows XP 64-bit is 2003 for all intents and IIS related purposes.