The vanilla game suffers from serious bugs, which can prevent you from progressing. This mod fixes those issues, but also rebalances the game and adds additional features. It can be downloaded here.
Alternately just hit esc twice to skip the two videos to get to the main menu(this was made before unskippable bik junk)
On newer systems (x64 Systems or 64bit) the autorun install from disc wont work because of an executable error. You can still install the game from disc using the installer found on the disc in the setup folder.
For example: DVD-DRIVE\setup\setup.exe