Thanks for the help! Right now I am just getting the feel of the program and trying to fix these lag issues

The stars I go to also seem to blink in and out, and when I go full screen everything disappears and all I see is black. Right now, I keep the window setting to 1024x768 and that seems to be okay. I set Landscape LOD to -2, Minimum Video Memory in the CFG file to 2048 MB, and turned Threaded Optimization to Off. My nvidia driver version is 340.52. I have an older system that was great when I built it, but right now it's near the minimum of the required specs. Due to home renovations, I won't be able to build another system for about a year or so, so I hope we can get rid of these lags in the meantime. My system is a Core 2 Quad Q600, with 2 GB of RAM, Win XP 32 bit, Geforce 8800 GTS 640 MB 112 SP video card. Should that be enough to run the simulation without lags? I also want to keep my video card temp from getting to 100 C lol, and I noticed the lag when the fps zoom up to 300 or so, everything seems to be fine when they are between 10-15 fps, so maybe there is a way to cap the fps there? Thanks!