Does any one know what type of PC (brand, hit etc...)a being close to Bill Gates, Warren B. Donal T. use?

Does any one know what type of PC (brand, hit etc...)a being close to Bill Gates, Warren B. Donal T. use?

i consider Bill Gates has a custom built PC beside Windows XP Pro, probably 2GB of ram a fully clad Graphics card like a 7600GT. yeah not even Bill uses Vista but. i think he does own a Mac though. Donald T. probably uses a Dell.
It have to be XP Pro for the OS, with adjectives of the problems with Vista I don't give attention to he uses it
A very expensive one... I wonder if Bill Gates uses a Mac?
They carry their own manufactured specially for themselves. by other comanies, cas he owns shares in memory module maker like intel etc.
surely bill gate wouldnt be using windows vista as he would surface that only dummies would use it ! he may be interested contained by mac os !
want to know a funny fact? bill gates's house be designed with a mac. most plausible vista ultimate (fresh install doesnt own half the problems of an upgrade). next to the finest intel (because of their current dominance) has to volunteer, a ****-ton of ram, and terabyte not easy drives.
They use any kind that works--I suppose they usually use one to be precise more expensive and faster--but in the run out, they all do duplicate thing.