i was wondering if anyone had a problem with 2004 vs 2006. I purchased Trainz: the complete collection. I have an aging system, but should still be able to run both programs. trs 2006 runs ok but a little slow. trs 2004 runs for about 30 seconds then shuts down with a blue screen of death and a bad pool error. i have an ati radeon 9000 w/ 64mg vram. i installed a friends version of 2004 that is build 668, and 2004 runs flawlessly, when i update to build 2370, i get the errors. But 2006 runs fine, so I am wondering if anyone has any ideas other than running 2006, or 2004 without the updates.