Rob Allen and Juozas Kaziukenas are both wrapping up their entries for this year's WinPHP Challenge and have posted about it (and some of their thoughts on the competition) to their blogs.
I learnt a lot about setting up PHP in Windows. It's amazing how much easier it was the second time when I installed it on the Leaseweb server. The Web Platform Installer is very good as long as you remember to stop the IIS service before running it! It's also very odd that the installer doesn't install PEAR or PDO_ODBC. I'm very glad that it uses the exact same installer as available at windows.php.net, as it makes correcting these oversights trivial.
And from Juszas:
It’s been more than a month since this competition started, but the time ran very quickly. Today I’m going to summarize what I’ve used to create my entry and what I’ve learned. [...] I think I have done everything that was required and now will try to push this application even further. Maybe Microsoft itself will show interest in it, because what I’ve done and used has been key topics in MIX 09.