power supply advice

[survivor]

I am looking for a power supply for my home use computer with no gaming in the future.I will be using Windows XP Pro 32 bit and no extra vid card.I need to know which would be better a single or two rail supply at around 400 to 450 watts?

[jlreich]

System specs? And PSU budget?

[survivor]

list of components so far still need a good p/s.have read that single rail 400w with around 30 amps non modular would be a better choice than multible rails and modular cable?still need to find memory for a Windows 32 bit xp.Thanks
Antec Three Hundred Black Steel ATX Mid Tower Computer Case - Retail
Model #:Three Hundred
Item #:N82E16811129042
Return Policy:Standard Return Policy
In Stock
$69.95 -$15.00 Instant $54.95

Update Intel BOXDG35EC LGA 775 Intel G35 Micro ATX Intel Motherboard - Retail
Model #:BOXDG35EC
Item #:N82E16813121336
Return Policy:Limited 30-Day Return Policy
In Stock
$89.99 -$5.00 Instant $84.99

Update Intel Pentium E5200 Wolfdale 2.5GHz LGA 775 65W Dual-Core Processor Model BX80571E5200 - Retail
Model #:BX80571E5200
Item #:N82E16819116072
Return Policy:Processors (CPUs) Return Policy
In Stock
$83.99 $83.99

Update Western Digital Caviar SE WD3200AAJS 320GB 7200 RPM SATA 3.0Gb/s Hard Drive - OEM
Model #:WD3200AAJS
Item #:N82E16822136098
Return Policy:Limited 30-Day Return Policy
In Stock
$57.99 $57.99

Update SAMSUNG 22X DVD±R DVD Burner with LightScribe Black SATA Model SH-S223Q - OEM
Model #:SH-S223Q
Item #:N82E16827151173
Return Policy:Limited 30-Day Return Policy
In Stock
$26.99 $26.99