First Build Attempt

Overall looks like a solid build. Here are my comments:

Nice case. It's very heavy though (both good and bad), hope you don't need to move the computer around much. There's an aluminum version if you need to move the computer easily, it's about $40 (US$) more though.

Also a good hard drive. I have two of them myself and like them.

For future overclocking (assumed from the ...yet) you should get at least DDR2-667 RAM, it's not much more expensive than the DDR2-533. Kingston Value Ram or Corsair Value Select would be my first suggestions.

If you want to game with that computer, I would upgrade the video card. If you want to stay with ATI, I would go up to at least an X1900 or X1950 of some sort like this one:
SAPPHIRE 100196L Radeon X1950PRO 512MB GDDR3 PCI Express x16. You should be able to find it or something similar at Canadian distributors. The nVidia 8800GTS (320 MB) is also a good choice, but a little more expensive. If the budget is limited I would drop the CPU down to an e6300 or e6400 to cover the difference to an X1950 or an 8800. The X1950Pro/8800GTS plus an e6300 would crush an X1650 with an e6600 for most gaming. None of the tasks you described are CPU punishers the way video editing or rendering are, so I think you would benefit more from an upgraded video card than an upgraded CPU. For internet, burning, and watching media a Pentium III or an original Athlon would suffice, so I am assuming the gaming is what sets the requirements for you. On the CPU subject, Intel is supposed to have major price cuts April 22 (e6600 to US$218 if I recall correctly). You are waiting for those, right?

Also, unless you plan to use Crossfire in the future, the P965 based boards are cheaper and overclock better compared to the 'XBX2. The Gigabyte GA-965P-DS3 is a popular choice, as are some of the Asus ones.

Finally, onboard sound is actually pretty decent on modern motherboards. Why not give it a try first and then get the soundblaster if you aren't satisfied with onboard?

Your motherboard is too much...

http://www.directcanada.com/produc [...] e=GIGABYTE - $148.88

Your Ram is waaay to slow. to match your CPU speed you should get PC28500 DDR1066. It's obviously way more expensive, but you should match the speeds if at all possible. And you should not have your memory running at half the speed of your CPU.

Here's a great deal if you jump on it now...

Patriot Extreme Performance 2GB 2X1GB PC2-8500 DDR2-1066 CL5-5-5-9 Dual Channel Memory Kit - $244.99 after rebate.

or

Mushkin XP2 PC2-8500 2GB 2X1GB DDR2-1066 CL5-5-4-12 240PIN DIMM Dual Channel Memory Kit - $249.99 after rebate.

I was thinking of these myself since they're such an amazing deal, but I don't really need it.

A Scythe Ninja is better and cheaper than the
Zalman CNPS9500...

Scythe Ninja Plus REV.B Heatpipe Fanless Heatsink - $40.52

The rest looks fine.

I'm having a hard time choosing a mobo. I looked at the Gigabyte GA-965P-DS3, it's cheap, but I noticed some people are reporting BIOS problems.

I wouldn't mind spending a little more money to get a more reliable mobo. After all, you get what you pay for. I know ASUS has a very good rep,
I can get this for $219.78 CAD (191 USD)
Asus P5B Deluxe Atx LGA775 Conroe P965 DDR2 2PCI-E16 PCI-E1 3PCI SATA2 Dts Sound 1394 Motherboard
http://stores.tomshardware.com/sea [...] d=26301139

But with that mobo I only save about $25 dollars, so would it be worth going for the Intel D975XBX2?