Tobi supports Windows XP (SP2 minium, SP3 recommended), Vista and Seven.
Tobi is a 32 bits application that runs on 32 bits (aka x86) or 64 bits (aka x64) machines.
Tobi requires the .NET "managed" runtime libraries of DirectX 9.
Tobi supports versions 3.5-SP1 and 4.0 of the .NET framework.
Tobi runs best on a computer with at least 1GB of RAM, a fast processor and a decent video card. Experience can vary enormously from one machine to another, but the application is known to work well on mid-range laptops.