Simply put, you can't change a company without changing its management - Andy Grove - Only the Paranoid Survive
DirectX 9.0 L is simply a renamed and refurbished DirectX 10 for Windows XP. It will make DirectX 10 games to work on Windows XP.
And games such as the upcoming Crysis won't work on the existing DirectX 9.0 c. they need a DirectX 9.0 L
One of the biggest issues is the fact that Nvidia or ATI won't have any mainstream or entry-level cards until at least mid- to end of Q1 2007. This suggests that if Vista tips up around the beginning of the year, gamers will be turned off by it.
Electronic Arts, the publisher of Crysis, wants to sell hundreds or thousands, even millions of copies and we doubt that Nvidia can produce and sell that many Geforce 8800 GTX and GTS cards.
It will be interesting to see whether the Windows XP Crysis will be different from the Vista ones. µ
Crysis actually does run on DirectX 9.0c...
we all know that direct x for crysis the game is a scam.

you can run the driect x 10 graphics in winxp with a bit of game tweaking.

and why the hell would you use punk buster when u can change the system settings for god mode and ammo.

the list goes on.

its all a scam.

DirectX 9.0L was the early name designation for what is now called "DirectX 9.0Ex". 
- DirectX 9.0Ex is a Windows Vista only feature
yeah i've heard that dx10 can run on xp.. anyone knows how to do it?
Crysis excelently works on directx 9.0c!!
I guess, that you need first find and download Dx 9.0L
this article is totally bogus and old - there is no dx "9.0L"
i can play crysis on XP at high options(N9600 GT video card), only the very high option is for dx10 vista. i hope they will do something to make it work on XP also at very high!