the install is a pain. a few tips.
do not install RBR on your windows hdd (anything other than C: ). also, do not install it into the program files (X86). just the old program files is the trick.
there is no cars in the mod itself. you then need to download the car packs (i think there 6 or 7 of them).
then you need to install patch 3 and 5 lol.
once that's done, you should be good to go.
this is my edited config file to get a higher resolution(RichardBurnsRally config file):
[Settings]
Depth = 32
ForceFeedback = true
Fullscreen = true
MinDepthBits = 24
MinStencilBits = 8
ParticleQuality = low
RenderCarShadow = true
RenderQuality = high
RunIntro = false
RunStartup = false
Sound = true
UseCubicEnvironmentMaps = true
UseEAX = false
UseSoftwareAudio = false
UseTripleScreenBuffers = false
WaitRetrace = false
XRes = 1680
YRes = 1050
i've also added the savegame folder for you to put into your main install directory. this will save you from making the cheat profile to open all the stages.