You DO NOT need a quad core to run FSX smoothly. I have no problem running the Level D 767 on my machine at 17+ FPS at a large airport like LAX and 30-40 FPS once clear of a dense city. CraigLian-Li PC60-B Case Corsair HX Series CMPSU-620HX 620W Power Supply Gigabyte P35 DS3R Intel Core2Duo E6850 Arctic Cooling Freezer7 Pro Crucual Ballistix 2GB PC2-8500 (DDR2-1066) EVGA 7950 GT OC 512 Mb Plextor PX-810SA/SW-BL 18X SATA DVD Seagate Barracuda 7200.10 500GB 7200 RPM 16MB Cache SATA 3.0Gb/sec Seagate Barracuda 7200.10250 GB 7200 RPM 16MB Cache SATA 3.0Gb/sec

The CS C-130 is most certainly a complex add-on. Just because an aircraft has a glass cockpit doesn't define it as complex. If that werethe case then all of the default FSX aircraft with glass panels would qualify as a complex aircraft and they are certainly not that. CraigLian-Li PC60-B Case Corsair HX Series CMPSU-620HX 620W Power Supply Gigabyte P35 DS3R Intel Core2Duo E6850 Arctic Cooling Freezer7 Pro Crucual Ballistix 2GB PC2-8500 (DDR2-1066) EVGA 7950 GT OC 512 Mb Plextor PX-810SA/SW-BL 18X SATA DVD Seagate Barracuda 7200.10 500GB 7200 RPM 16MB Cache SATA 3.0Gb/sec Seagate Barracuda 7200.10250 GB 7200 RPM 16MB Cache SATA 3.0Gb/secCraig

HiGo for the Level-D 767 (for me it works super under FS X / SP2.Here:http://www.leveldsim.com/forums/forum_posts.asp?TID=16238Peter