Gamefront gives: the requested site can not be found...
It downloads just fine for me.
I've uploaded it to SendSpace, in case you're better able to download from there.http://www.sendspace.com/file/maw7nf
The ck_sunlight.zip file unzips to a folder with two files in it -- a CK_sunlight.exe file and a Game Patches.url file.
Don't forget that with old patches like this you often have to start the game over, and you usually have to copy the patch to the game folder before running it for it to have any effect.