I have purchased the FSX Acceleration DVD and have read the posts in this forum. I am a little confused as one person states to completely uninstall FSX and SP1 and Sp2. Others say remove SP2 only before installing the FSX Acceleration. What is the best way to install FSX Acceleration and avoid any problems. I have bought the ORBX sceneries also and don't want to make things worse by installing things in the wrong order or improperly. Thanks for any help.