Taken from Gamespot

"Ubi Soft makes available a new playable demo of Splinter Cell that includes three levels.

Ubi Soft has released a new demo of Splinter Cell that includes more levels than the one released in December. The 160MB demo has three levels, including the same Tbilisi level that was in the first demo, another Tbilisi level, and the Kalinatek mission. GameSpot Complete members can download the file from the link below.
The PC version of Splinter Cell features some small adaptations for PC hardware but is primarily intended as a faithful conversion of the best-selling Xbox stealth game. The game is scheduled to ship next week"

To those who havent played this game yet. Its great! Try it!