Video Game Systems

There is a nintendo nes games don't know what is called , its about a boy that wants to rescue a girl and he killes his enemies with soccer balls he shoot balls , the finall stage is on the moon what is it called ?

I bought a Nintendo Entertainment System today, and after playing it for about an hour, I went to switch games. When I put the new game in, the screen was just grey. I thought it was the game, so I tried a different one - still no luck. I tried about 10 different games in it and every time, it was either a static grey screen, a flashing grey screen, or a static mustard yellow screen. It was the only system left in stock at the store from which I purchased it, so I can't really go back for a return. I was wondering if there are any DIY fixes for this problem? Thanks!

PS - It's the original NES, not the top-loader or the Super Nintendo.
**EDIT** Yes I tried blowing in the games and the system numerous times, but nothing has worked.
**EDIT2** I blew in it as hard as I could. I shone a flashlight into the system and nothing is out of place or broken.

I have a laptop that came with Vista, but I didn't like it so I downgraded (upgraded IMO) to XP. The laptop has a Core 2 Duo T7300, which is 2.0ghz. However, when I go into the system console in the control panel, under "Computer", it says:

Intel(R) Core(TM) 2 Duo CPU
T7300@ 2.00ghz
1.18ghz, 2.00gb of RAM

Shouldn't that second clock speed be 2.0ghz as well? It's dual core, so shouldn't both speeds be the same?

If someone has the same processor on Vista, could you see what it says in your system console? Or does anyone know?

I don't feel comfortable losing 800mhz of power.