In order to access Slingbox content you must use their customized software, which is designed to prevent possible copyright/licensing infringement by 'sharing' access with others. It works under both Windows and Mac OS X, but the Apple TV is ruled out. You can, however, pick of a SlingCatcher for your vacation home so you can directly access the Slingbox's content without using a computer.
Hope this helps,
I have a vacation home that I use 2 days a month and pay cable of $50 per month. Could I install a Slingbox at my main home, and then buy an Apple TV for my vacation home and hook it into a 42 inch LCD TV. Seems to me that I could eliminate the $50 cable TV service at the vacation home and only need a highspeeed Internet connection. I'd have better TV and access to everything I pay for at my main home. This could be a slick solution for people with seldom used second homes and the wasted cable TV bills associated with them. Does this sound workable...difficult to setup?