When I walk around the computer stores, I see that notebooks and desktops have the stickers, like Windows Vista Capable. So, it does sound like a computer can run Vista. If you decide to buy a computer in the nearest future and you want to make sure your computer will run smoothly, do not look for the Vista Capable, look for Vista Premium Ready.
Here come the details from the Mcrosoft Page that state the differences:
A Windows Vista Capable PC includes at least:
* A modern processor (at least 800MHz1).
* 512 MB of system memory.
* A graphics processor that is DirectX 9 capable.
Windows Vista Premium Ready PCs
To get an even better Windows Vista experience, including the Windows Aero user experience, ask for a Windows Vista Capable PC that is designated Premium Ready, or choose a PC that meets or exceeds the Premium Ready requirements described below. Features available in specific premium editions of Windows Vista, such as the ability to watch and record live TV, may require additional hardware.
A Windows Vista Premium Ready PC includes at least:
* 1 GHz 32-bit (x86) or 64-bit (x64) processor.
* 1 GB of system memory.
* Support for DirectX 9 graphics with a WDDM driver, 128 MB of graphics memory (minimum), Pixel Shader 2.0 and 32 bits per pixel.
* 40 GB of hard drive capacity with 15 GB free space.
* DVD-ROM Drive.
* Audio output capability.
* Internet access capability.
Well, knowing all that, I would say, get a 2GHz processor, 2GB RAM, 500GB Hard Drive and an upper class video card if you want to have a good feeling about your PC in a year or so.