Here is a list of reliable vendors.  Please use only secure servers to order online to protect your privacy and credit.

PriceWatch : a comparison engine where individual vendors list their best prices.  Very handy when shopping around!

EggHead.com : Very competitive pricing and a little bit of everything.

TigerDirect.com :  They have the latest and greatest hardware available.

Dell Computers :  Good systems and excellent warranty.

Gateway Computers : Good systems, excellent warranty, but tech support is not as good.

PC World :  Check out the ratings here.  They have excellent articles and test individual systems every month.

How to build a reliable computer :  Some tips and tricks I've learned over the years.