FSX on "low end" machine

Hi,I am surprised to find FSX working just fine and smoothly on a low end machine. Here's the specs. It is a technically outdated Dell Dimension 1100 Basic ($300 class PC) with the following upgrades:-Swapped out Celeron 2.53GHz against a Pentium IV 2.8 GHz (FSB 533 MHz)-Upgraded RAM from 256MB to 512MB (DDR 1)-Added SoundBlaster Live Gamer 1024 sound card-Added a PCI (*not* PCI Express!) Geforce 6200 with I believe 256 MB graphics RAM.So overall, this machine has cost about $500 in total and uses some spare parts that I had left over anyway.After an installation of FSX, I found some of the settings for graphics to be WAY too conservative, in particular texture details. I was able to tune up the global maximum texture resolution to "High", set anisotropic filtering to on and switched to 39m mesh resolution, 80% complexity and 2m ground detail resolution. I can fly missions and the Friday Harbor default flight very smootly on this rig. Okay, I turned AutoGen way down, but still impressive. I wish the Microsoft installer would look at available graphics RAM when making its decision on the initial graphics detail level.So now how should I explain to my wife that FSX just took 15GB on her hard drive, leaving a meager 3GB for her to work with ;)Christian