I would recommend that you only go with a good brand name psu. I would only go with antec, vantec, or enermax. Spend the money, it is worth it in the end. A good 400W psu should run about $80 or so on our side of the pond.
Abit BP6 2X 300A@450 mhz, 1.5 GB PC133 ECC, Renditon Verite V2200, SB AWE32, Adaptec 2940U2W, 4.3GB Quantum Atlas 10K, Plextor Ultraplex