hey man, alright looking build but if he wants to future proof it:
Mobo - go for a P5Q Pr, not the standard one($50 more with loads of extra features)
CPU - skip the Q8200 and for a E7200 with custom cooler(still save him about $150) then overclock it to round 3.8-4ghz, quad cores are pretty poo at the moment, since nothing utilizes them and nothing will for a few year, apart from a few select games and some Adobe Photoshop products(CS4 does i believe)
Video - With the money saved by going E7200, get a 4850(extra $100) but has a lot more kick, graphics cards are more important than CPUs in most respects these days, since CPUs have hit a limit(apart from the new iCore 7s and Phenom IIs displaying some nice overclocking)
RAM - Just go with 4GB of DDR2, there isn't much a performance difference between DDR3 at the moment, just make sure you run XP 64bit or Vista 64, otherwise he'll only ever use 3.5gb
Plus 2GB chips are so cheap, fill up just two slots and have two leftover
HDD - Skip the 1TB HDD, and buy 3x 500gb HDDs for the same price, then take the first and put the OS on it
take the second two and RAID them in a striped config(RAID 0?) so it equals 1TB, this will increase performance by about 20% on the HDDs
Also they are right about the Barracudas failing, we've had several fail at work, get Western Digital, they are also quieter
DVD-RW - Just get teh cheapest one you can find at the time, should only be about $32 with SATA, BenQ are all good with lightscribe too
Keyboard/Mouse - You could go the logitech Desktop 1500, it's one of the cheapest laser models, I've got one here, or you could fork out an extra $30 for a Logitech MX3200 which I also have, great layout and excellent keyboard
Monitor - your choice of 22” Samsung 2233BW LCD, another good brand is the AOC 22.1" if you get it, it uses the same LCD panel as the sharp, but I guess the bezel surround isn't as sexy
Foxconn TLA-889 Case - hmmm, quite a fugly case to be honest, and cheaply made, for about $20 more you should be able to pickup a named brand like a Thermaltake/Antec/Chenbro or for 40-50 more Silverstone/Lian Li etc
PSU - Skip the coolermaster, find a Silverstone 700w modular for the same price, highly efficient and very sexy like most silverstone stuff
Speakers - Altec Lansing FX5051 5.1 Speakers - you don't need these, they are $50more than similar Altec Lansing speakers(GT5051R) and Creative/Logitech speakers with less power, only because they can be run off a USB port, they are for a non dedicated 5.1 setup, since the board above has 8 channel surround, all other 5.1 setups will plus in + 7.1 setups
P5Q vs P5Q Pro = +$40
Q8600 vs E7200+Cooler = $-100
4680 vs 4850 = $+132
DDR3 4GB vs DDR2 4GB = $-88
1TB vs 3x 500GB = $+64
Desktop 1500 vs MX3200 or Wave = $+30
Samsung vs AOC = $-67
Foxconn vs Thermaltake = $20
Coolermaster 650w vs Silverstone 700w = $+10
Altec Lansing FX5051 vs Altec Lansing GT5051R = -40
= $1 difference in NZD prices of course
for a faster system overall, better suited to a casual gamer/the internet