A few questions regarding the above machine:
1. Is it true that it is impossible to upgrade the powersupply to a higher wattage without causing damage or inaccessibility to the motherboard?
2. Does Dell sell cases and parts for other models of Dell machines (i.e. Dell Precision)?
3. Regarding the Dimension. Is it possible then to purchase a new motherboard and powersupply from Dell from a newer Dimension series without purchasing a new machine?