a new PC may soon be needed at the place I work. since it will be doing office work mostly what can I make cheaply by using parts from previous PC. Previous PC is a Dell Gx280 with Pentium 4 processor. I'm thinking an AMD build is warranted, just out of notion to support AMD for thinking of us customers like they do not change sockets while bringing new CPU's to the market. So basically i need a processor , motherboard and a case. Maybe can use parts from older PC. So what am I looking at ?