[Zope] server capabilities

Hi, I'm asking you web-gurus for some information concerning the 'capabilities' for a server. I'm at the stage of buying a new PC for Zope and a Database. This PC will be used for the intranet and will contain Linux, Zope and the Database. Other users will be capable of accessing Zope through browser over the intranet. My question is: what capabilities does this PC needs? what advice can you give concerning the processor, memory (how much?), Hard disk (how much? SCSI/IDE?) All advice is welcome!!! Thanks in advance. Tom.