Okay your power supply link is nothing but rubbish, do not
bother with this. It's just a waste of your time and money. As it has been stressed repeatedly in this thread, you need to focus on QUALITY components. It's not about the power and that it has 20W more, it's about quality and how long it will last, how reliable the product is, how well it's been made, how good the efficiency factor is, how much upgradability it can handle... There also is a lot more to a PSU than the watts... I've said it before, I'll say it again, I really am unimpressed with the geeks website you keep linking to. They make it hard to find the good bits.
So far we have:
Motherboard: P35 chipset (prefer Gigabyte or other quality brand) with onboard audio.
Processor: LGA775 Intel, preferably Core 2 Duo minimum. (Like the E6600 or E6400 as an example).
PSU: Mushkin as mentioned above
RAM: 2GB DDR2, quality brand like OCZ, mushkin, Corsair, Crucial. Go for 667MHz speed.
Hard Drive: Make sure you go for a SATA2 drive that has 16MB cache minimum. The one you mentioned has only 8MB cache. EXAMPLE
Video Card: If this system won't be used for gaming, I'll let James call this. I would recommend a 8500GT, cheapest DX10 card...