Also a great way to bypass all the intro videos!
To run Lego Racers 2 perfectly in WINE under Linux, simply rename the folder containing LR2's movies (e.g. change "Movies" to "_Movies").
This will resolve the crash that normally occurs upon launch, and allow LR2 to run, albeit without movies (the intro movie, and the movies that show when you enter each world).
On this issue, I though it wouldn't install on 4 gigs of RAM (maybe I'm wrong, I can't remember). For the reason origamiguy said, depending on if it's signed integer or unsigned integer, it would either be at 2GB or 4GB, not 3 and some.
My LEGO Racers 2 won't even install on Ubuntu. When I press install from the launcher, it starts preparing the install, but then it says "Not enough memory". Quite weird, i would say, when the game hardly demands any.
But it is good that you have found a way to start it. If I get it installed, I'm sure it will be helpfull.
The "not enough memory" thing occurs on Windows as well, if I remember right it won't install normally if you have over 1GB of RAM.
Correction: it'll throw "not enough memory" if you've got 2GB or more of RAM. This is because they used a 32-bit signed integer to represent the amount of available RAM, which overflows at the 2GB mark.