Downtime: A day at max, if down for a longer period of time, subscription time will be added for the downtime.
Settings: Yes the settings are fully configuralbe in game. I suggest you look at some of the videos:
http://www.artificialaiming.net/foru...-0-codmw2.html
And yes Im sure someone on the forums can help you. Just make sure when you get your VIP that you post in the MW2 VIP section