When uninstalling FS9 (in prep of a fresh install), should you take out every add-on with it's own uninstall option before uninstalling FS9 itself? If you just kill the whole thing at once, are bits and pieces of add-ons left all over your HD?Also, is there any advantage to using the Remove Program uninstall option instead of the FS9 uninstall?Thanks.

It is always best to remove all your addons first that have a uninstall option. FS9 should be the last to be removed. You can use either the control panel add/remove feature or the uninstall from the program. I find using the control panel will have everything in one easy place to see all of the installed programs you have. Have fun :)