This is not related to Vista, so I guess is the good place to start.
I was wondering if there's a way to make an application, and just that application (not the entire OS), see a fixed amount of RAM (lower than present).
This was due to a game, an MMORPG, that detects systems with lots of RAM (~4GB or more) as low end. This makes it use (enforced) only the lowest settings available.
I remember to have tried the Compatibility Administrator, as there was a Compatibility Fix that allows to set a fixed ammount of RAM and Swap file (for the program to see, I think). I don't remember it right now, but it didn't work anyway.
Since I cannot test such thing, due to not having a system at hand with 4GB RAM or more, I wonder if anyone here know of something that could be tried.
Thank you for your time!