Hi,
I think 2GB of Ram is way way overkill for what you want/need. 1GB should be plenty. Windows was designed for PCs with 128 to 512 megs of RAM. At a certain point, adding more RAM doesn't really get you much performance.
Also, the only DOA RAM I've ever had was Corsair Value Select.
I'd strongly recommend buying from Crucial instead. If you put in your motherboard make and model, their website will select RAM that they'll guarentee will work without error.
Also, just some advice from a long time PC builder:
1) Statis shocks will kill your nice shinny new CPU in an instant. Get a wrist strap, or at least make sure you touch something metel (and grounded) before you touch the CPU
2) Install the Motherboard, CPU, CPU Fan, RAM, video card and either a floppy disk or CD-rom drive. Then run memtest86+ for a few hours to make sure the RAM is working. Memory errors will cause random crashes and be very difficult to track down. If memtest86+ (
http://www.memtest.org/) finds any errors, return the RAM as defective.
3) Go SLOW. Get set for a long time. If you feel yourself getting impatient, stop and take a break. This is particurly important when you are installing the motherboard, CPU, CPU fan, and RAM.
4) Make sure you use the right screws for the right parts. The case will come with a huge number of screws, motherboard stand-offs, drive mounting screws, etc.
5) Don't force anything. If something won't slot in, step back and take a look at it. Connections and RAM sockets are keyed, so they'll only go in the right way.
6) Don't be tempted to try the computer before installing the CPU fan. Modern CPUs have thermal protection to prevent an absolute meltdown, but don't test it. Running a CPU for even a minute without a heatsink/fan will cause it to overheat.
7) Make sure you've got good light and, and did I mention, take you time.

Good luck.