To enable the 3GB switch on Windows Vista™ or Windows 7:
1 . Right-click Command Prompt in the Accessories program group of the Start menu. Click Run as Administrator.
2. At the command prompt, enter "bcdedit /set increaseuserva 3072"
3. Restart the computer.
I to tried this yesterday (WIN 7 32bit) and would normally get a CTD about every 90 minutes I played about 4 hours with no CTD. Did a flashpoint, 3 warzones and BH (not to mention a few trips to fleeet, which would normally be enough to kick me 2 or 3 times.
Interestingly I did have it go to the desk top 3 times (as if I tabbed into it) and I just clicked back on my taskbar and back into the game, the odd part was that I could hear the people taking in the flashpoint, went through the normal reload splash screen while that was going, and eventually loaded up the cutscene again at the end of Taral V.
Just to let you know this is still working for me I had a quiet day on Mnday and was able to spend the Majority of the day on the game, mostly doing warzones and in about 10 hours I had 1 CTD.
Ironically I did have 2 times where it sent me to desktop but did not crash, just like I had window keys out of it.