+1 for the previous suggestions.
Add to the list of good cooling gamer cases, the Antec 902 :
http://www.newegg.com/Product/Product.aspx?Item=N82E16811129058
and the coolermaster sniper:
http://www.newegg.com/Product/Product.aspx?Item=N82E16811119194
Shopping tips for Vista:
1) Do you qualify for an academic license?
If so, you can get Vista at a discounted price.
2) Look for an upgrade version of home premium instead of OEM.
Upgrade is a retail version which gives you support from microsoft, unlike OEM(AKA system builder),
and allows a more hassel-free ability to transfer the os to a different pc(motherboard).
For $10, microsoft will send you the 64 bit DVD.
I saw Vista home premium upgrade recently at Costco for $85, amazon for $89.
There is a legitimate two step instalation process to install an upgrade version
You install vista from the cd, but do not initially enter the product code.
Just tell the install which version you bought, and do not activate.
After it installs, you have a fully functional vista for 30 days.
Step 2 is to insert the cd again, while running vista and then do an upgrade.
This time, enter your product code, and activate.
After activation. you may delete the initial version which is named windows.old.
3) Do you possibly need Ultimate? There are very few features that the home user would want.
Check out the differences on the microsoft Vista web site.
If you get a retail or upgrade version, you will still be able to upgrade to ultimate later.
The value of raid-1 for protecting data is that you can recover from a hard drive failure quickly.
It is for servers that can't afford any down time.
Recovery from a hard drive failure is just moments.
Fortunately hard drives do not fail often.
Mean time to failure is claimed to be on the order of 1,000,000 hours.(100 years)
Raid-1 does not protect you from other types of losses such as viruses,
software errors,raid controller failure, operator error, or fire...etc.
For that, you need EXTERNAL backup.
If you have external backup, and can afford some recovery time, then you don't need raid-1.
---good luck---