You might be surprised at what the Enlight 250W PSU can do. I have mine running a system with a T-Bird overclocked to 1.4 GHz, 2 7200 rpm hard drives, 2 case fans, a Geforce 3 that is overclocked, 2 soundcards, a CD-ROM and a CD-RW, and it does just fine. I personally think that the inflation of PSU ratings is a bit of hype, pushed by the "tweako" machismo of overclockers. If you are the sort running 6 case fans and a water cooled CPU, then you will naturally want a huge, expensive PSU as well. Nothing wrong with that--I'm just suggesting that you not upgrade until you know you need to.
Thats really funny, a guy who is overclocking his geforce3 of all things talking down to '"tweako" machismo of overclockers'