I don't think he wants to get into overclocking, because he is already worried about the BIOS setup. However, 003 is still right about the 4000+. It is a very good processor, but it is also almost unnecessary. The 3700+ would be just fine if he wants a San Diego core. I only have a 3000+ (which I did overclock) but it works great, and I play games like Half-Life 2 and Doom 3 (which use the most up-to-date graphics). The graphics depend on the graphics card pretty much. I don't know what you'd need a 4000+ for, but if there is a specific reason that it is needed, then go for it. Why would he sink money into a 4000+ and then buy a 6600GT if he is going to be gaming. Seems like he'd want to go the little extra bit to get a 6800GT. I don't know...
As for setting up the BIOS, I wouldn't worry about it if I were you. You won't need to set anything up on it to get it working, unless of course you wanted to boot from a cd (like Hacp said). Also, if you're going to overclock in the future, you'd do it from the BIOS. You shouldn't have any worries man.
That RAM... I must be looking in the wrong spot because it says that it is upwards of $170. Seems a bit much for PC 3200 RAM unless he is overclocking it. Maybe not, but I just generally try to get good deals. I have 2 GB of RAM in my computer that only costed about $180 ($90 for 1 GB). Just make sure he isn't thinking that the most expensive is the best. However, I didn't find the exact RAM you're talking about, and it could very well be worth every penny. Anybody know anything about that RAM?
AMD Athlon 64 3000+ socket 939 @ 2.3 GHz
MSI K8N Neo2 Platinum motherboard
EVGA GeForce 6800 GT
2 GB DDR 400 (PC 3200) (2 x 1 GB sticks) (Dual Channel)
DVD player and seperate DVD RW drive
80 GB Western Digital Hard Drive
500 watt power supply
Sound Blaster Audigy
Logitech 5.1 surround sound speakers
SAMSUNG SyncMaster 710T LCD monitor
Aspire X Navigator Case