Rockstar’s detailed a patch for the PC version of GTA IV. You’re going to get the following:
-A fix to the crash after legal screen that some German customers were reporting.
-Numerous improvements to the video editor: Smarter naming of videos, improved rendering quality, better fx during replays
-Fix to bowling while using certain sensitive mice
-Fix for ATI 1900 shadows
-Overall savings to memory
-Graphic improvements to particle systems and mirrors
-Multiplayer character settings are preserved
-Support for DirectInput controllers. Note: The current hack way of supporting these controllers may not work with the improved functionality. So we recommend you remove the hack before upgrading to the patch.
There’s no specific date on te fix as yet, but you can download a new Nvidia driver in the meantime to help the game, you know, work.