I recently bought a copy of The Sims 2 but when I installed it, I found it was stuck at a resolution of 800×600, and I couldn’t get it to run any higher. My laptop has a native resolution of 1024×768, so it would be much better to run the game at that level.
The EA Games support site didn’t have much useful information on it, I tried the command line options that allow you override the defaults, but it didn’t make a difference.
I tried another search in Google last night and found a suggestion on a discussion forum.
Find the file:
C:/Program Files/EA GAMES/The Sims 2/TSData/Res/Config/Graphics Rules.sgr
… and make a copy of it under a different name as a backup (something like Graphics Rules.sgr.bak)
Now edit the original file and find the section:
You will see settings for Low, Medium, and High. Copy the medium settings and paste them over the low settings to allow the game to start at 1024×768 resolution or better.
Save and exit and then start the game to see if it works.
The game looks much better now at full resolution on my laptop !