Originally Posted by pseudonatural

FlyFF requires no additional configuration to work in Vista. Like all MMOs (or anything that has an online patcher), make sure it's set to run as Administrator.

If you can't run FlyFF, then blame not the OS and look elsewhere for why it will not work as I have it running on two separate Vista PCs with no problems.

Actually, the only game I've ever ran on Vista that I've had problems with (and I haven't even been able to test it on an XP setup to see if it's even a problem with Vista) is RF Online. I get numerous CTDs. Oh, and RAN Online says that I don't have DirectX 9.0c (duh, I have DX10 haha).