I agree with yewanchors that you should stay away from Dell; and from Gateway, and HP, and others whose main business is workstations and office computers. Although Dell is advertising a ''cheap'' gaming computer, you probably would need so many upgrades that its price would be become competetive with a true gamer.
Since you list yourself as a Newbie, you may not want to build your own system, as yewanchors suggested. But at least study up on available components, especially the CPU and chipset, drives and video cards. Talk to other gamers in your area; there may be a club or SUG. Decide what you want, and how much you want to spend (probably around $1500 for a mid-range gaming machine, >$2000 for a high end, liquid cooled machine.
Once you know what you want, and guess at what enhancements you may want in the future, find a local system builder; preferably one who specializes in gaming systems. I don't know where in Louisana you live, but if near one of the larger cities, you probably could find one. Check their reputation for service and support, both during warranty and beyoud. Then when you find a good one, have the machine built to your specifications, including the model numbers of all components you select.
If you don't want to go through all this, then buy from a company that specializes in gaming computers, such as Alienware. They are amongest the best of all computer manufacturers in the country for service and support.
One more thing; wherever you get your system, insist on an original Microsoft XP System disk. Don't settle for a ''restore disk.''
Hope this helps