What I found for that name and those specs is a desktop machine. It doesn't have a video card and you'll need one for graphics.
A primer for what the parts do:
Motherboard: The base circuitboard that all the other components plug into. It serves as the infrastructure for the PC, carries signals between parts, controls the signal traffic, and is also home to the extreme low-level programming (called firmware) that exists before any OS like Windows or Linux is installed. All the ports on the back of the case are part of the motherboard. The motherboard itself doesn't do all that much in terms of performance, but the number and type of sockets on the board do determine what kind of processor, video card, and RAM you can have on the machine, and how many of each.
Central Processing Unit (CPU, or just processor): This is where operations are performed on data, and one of the most important factors in determining PC performance. Processors with a higher frequency (today measured in GHz for any decent machine) tend to be faster. Can have more than one processor core to handle multiple tasks in parallel for programs that are coded to make use of that feature. The more calculations per second, the more heat is produced. In a poorly built or maintained PC, these can overheat and become damaged over time, although the days when they'd melt themselves are gone (I think), so cooling the CPU is a major priority in a high-performance machine.
Video card: A self-contained miniaturized computer with its own processor and memory, whose sole purpose is to handle the rendering of data into visual output for the monitor so the main processor doesn't have to. Your video card's capabilities will have a far greater effect on frame rate than any other part of the PC. These are also an overheating risk on performance machines. Sometimes a separate card, sometimes part of the motherboard (the latter is almost never very good, you should always use a separate card for graphics). The processor that handles the graphics is called the Graphics Processing Unit or GPU.
Hard drive: Where your data is stored permanently (we hope). Usually a set of magnetic disks that work much like CDs or even record players, but with much higher data density. Very sensitive to vibration when spinning, as the read-write head is less than a hair's width above the disk. Contact between the two tends to erase chunks of data, sometimes the ones that allow your computer to boot up. For this reason, some companies will fire employees who repeatedly move their PC cases while they're powered on. Newer drives try to protect against this, and laptops are the best at it for obvious reasons, but still, impact of any kind while running is a BAD THING. I speak from heartbreaking experience.
Random-Access Memory (RAM): If the hard drive is your long-term memory, RAM is your short-term memory. This is a place where data that's being used to do stuff can be temporarily stored and accessed much, much faster than what's on the hard drive. Any time you see a loading screen or notice, the data is being transferred from the hard drive to RAM so that the information can be used immediately. Any open files you have on your computer are contained in RAM. Unfortunately, RAM is a volatile thing and will get cleared or reallocated if the computer is powered off or if something interrupts the process that is using it, which is why your unsaved data is lost in a program crash. Saving files is the process of writing what's in RAM to the hard drive. If RAM runs out, the program will either crash or begin using the hard drive as if it were RAM, at which point the program slows down considerably.
Hopefully that helps you have a better idea of what you want.
One more thing on the subject of cooling: At least twice a year, but preferably every other month, open the case of your machine and carefully vacuum the dust out (unplug it first). Be careful not to discharge any static electricity onto the motherboard (easily avoided if you frequently touch any grounded metal object, which can even include the metal frame of the PC case depending on where you've got it). This simple step will make your PC last much longer. Most cooling fans rely on a set of closely spaced copper fins to draw heat from the components, and over time dust accumulates at the edges of the fins and keeps the air from the fan from passing through, making the fan nearly useless. At this point your components will start running somewhere between 80 and 150°C (170-300°F) and self-bake. So, get that dust out of there. Pay special attention to dust accumulated in and around fans. Not very many casual users do this and it's usually why their machines stop working after a couple of years. It happens to Xboxes too. My roomate had a box that started getting red lights 20 minutes into each play session. We opened it up, vacuumed it out, and it works great now.