cjrgreen: That's an old computer that won't run many modern games. The biggest problem for The Witcher is the graphics. It has only the built-in Intel graphics (and not even an AGP slot), and those are no good for any game (including The Witcher) that calls for hardware shaders.
Sorry, the only recommendation I can make is getting a whole new computer. There's nothing worth salvaging in a Dimension 2400.
Ok what kind of computer do u suggest so that i can play The witcher and The witcher pretty good?
jose68: That question should get lots of answers on this forum. I'll give specs rather than make and model, so you'll have something to use as a checklist.
CPU: TW2 likes quad cores, but the new Core i3 "Sandy Bridge" hyperthreaded duals outclass many earlier quad cores. So the practical minimum is an Intel Core i3 2100 or AMD Athlon II x4. If you can afford it, the AMD Phenom II x4 or x6 is better, but the Intel Core i5 2400, 2500, or 2500K is much better.
OS: Windows 7 x64 is the most suitable, and there is no good reason not to use it.
RAM: With a 64-bit OS like Windows 7 x64, get 6GB or 8GB of RAM. The fact that there's enough of it is more important than how fast it is. (If you have a 32-bit OS, just get 4GB.)
Graphics card: Graphics card recommendations cause more controversy than anything else around here, but my picks are:
Bare minimum, these are fine for The Witcher but will only do low to maybe medium on The Witcher 2: AMD 5670, 6670; nVidia GT 440.
Recommended: these have been generally successful in running The Witcher 2 well: AMD 5850, 6850; nVidia GTX 460.
Outstanding: AMD 6950 and up, nVidia GTX 470, 480, or 560Ti and up.