I take issue with your choice of hard drives. While the VelociRaptor is OK (despite its price premium), the Segate 7200.11 is definitely not OK. It's not that it's a bad drive, quite the contrary, just that Samsung and especially Western Digital make better drives. My choice would be the
Caviar Black, which although it's a bit more expensive, it performs better overall, and it has a 5-year warranty. The
Caviar Green is also OK, though the performance difference with the 7200.11 is not that big.
Also, have in mind that Seagate
will no longer offer a 5-year warranty in HDDs starting January 2009, so buy fast!
Regarding memory brands, a well-known one is OK. Kingston, Corsair, Crucial, GeiL... I personally prefer Kingston, but that's because it's the biggest manufacturer of all, and its Value RAM is everywhere, and never gave me problems.
As for the rest, my recommendations in the other thread still apply. And remember that first you choose the CPU, then the motherboard, not the other way around
I would not personally go for a Core i7
yet. You're paying a big premium for the CPU, the memory and the motherboard, and unless you're going to use the computer for some processor-intensive tasks, you're really burning money at this point. When the entire platform lowers its cost, it's more than recommendable, but Intel is not going to do that 'til later in 2009, possibly in the second quarter, when they'll introduce new CPUs at a lower price. The Core 2 Duo (or Quad) still will be a great choice for a time.
It would be helpful if you also tell us what you will use the computer for, whether it would be just surfing the Internet and working with it, or if you're also going to game with it, or do some other more exotic things, like graphics or video editing.