get it here:
http://www.racesimcentral.net/
Changes in version 1.0.4.5.
General
=======
General graphic speed and capability improvements from version 1.0.2.4.
Although the same driver compabilities problems with Nvidia Detonator
drivers that were in 1.0.2.4 is still a problem in this release.
Menus
======
Garage
------
Added ability to revert to default car setup
AI
==
Improved AI line for all tracks
Multiplayer
===========
Patch 1.0.4.5 is needed for multiplayer capability with the US version.
version 1.0.2.4 (European retail) is not compatible with version 1.0.4.5 in
Multiplayer.