This is for readers in the United States.
Cyberpower is a highly rated manufacturer of semi-custom gaming computers.
Sears (yes, the department store people) is a distributor for them. If you are in the market for a new gaming desktop check out their web site. They are having a promotion with free shipping and price reductions.
Here is a link you can use, but their web site appeared way to busy today for easy linking:
The advantages of buying a computer at Sears or Costco (in the United States) is the return policy. You usually can just drop a computer off at a physical location and return it for any reason for your money back. This beats having to deal with 800 numbers from other retailers, or having to mail a computer back for any reason.
If you want to save even more money they sell Sears gift cards online at discounts at places like giftcards.com
Get a gaming computer with an NVDIA card, not an ATI card for Second Life. They work much better.
Extend your one year warranty with a Square Trade Warranty -- they offer great service, and search online for an updated discount via electronic coupon-- they are always out there for up to 20% - 30% off.