Here is list of tools and links I use to troubleshoot problems on IIS boxes:
Filemon.exe (sysinternals tools)
Regmon.exe (sysinternals tools)
procexp.exe (sysinternals tools)
Logparser.exe (This is a super parser for IIS logs and much more. It’s a live/time saver)
IIS Debugtools (Debug Hangs/crashes memory leaks)
AuthDiag (Authentication problems)
IIS Resource Kit tools
IISTracer (Realtime monitoring)
google.com (of course)
www.technet.com
www.msdn.com
www.eventid.net

This is a favorite link I use very often to generate complex passwords.
http://www.winguides.com/security/password.php
Hope you find it usefull.

Today a found this artilce from the IIS team people.
Today, Microsoft and Zend announced a joint technical preview aimed at providing best-ever support for running PHP applications on IIS in a reliable, and hi-performance way.
What is FastCGI?
The IIS FastCGI component enables popular application frameworks like PHP be hosted on the IIS web server in a [...]

I don’t know every entry by heart, so this page is bookmarked…
Hope you find it useful.
HTTP
1xx – Informational
These status codes indicate a provisional response. The client should be prepared to receive one or more 1xx responses before receiving a regular response.

100 – Continue.
101 – Switching protocols.

2xx – Success
This class of status codes indicates that the [...]