The Grand Theft Auto 4 DLC coming in February will be exclusive to the Xbox 360 version.

The catalogue page for the downloadable content at Gamestop states that the download works with 'Grand Theft Auto on Xbox 360' with no mention of a PC/Steam version.

Grand Theft Auto IV - Screenshot 3112

Steam users will have to be content with the original game

Shacknews also call both this episode and the second episode, yet to be named and dated, 'Xbox 360-exclusive downloadable episodes'.

We can only hope that once the episodes have been released on the 360, Rockstar will help them find their way to the PC, although after all the issues PC gamers have been having with the GTA4 PC port (causing the PC version to receive a meta rating of a whole 7% less than the 360 and PS3 versions), it is not clear whether this will actually ever happen.