simple, have a downloading program (e.g., iMesh, Kazaa or Bearshare) installed on your pc. Then, using that program, download the genesis emulator and games. It is so easy to do. Me, I have almost all sorts of emulators like the SNES, NES, GENS and others. It is really good to go back to the games of the past. Makes you appreciate the game tech we have nowadays. ahihihihi....

You can download it on the computer. You can get the emulator from the following site: http://prdownloads.sourceforge.net/vba/VisualBoyAdvance-1.7.1.zip theres a link at the top of the page saying if the download doesn't begin you can click here.
Anyways after that you need to get a winzip which you can get by using the following site: http://www.download.com/3120-20_4-0.html?qt=winzip&tg=dl-20.
The first winzip is the one you want to get. On the right side you should see a button hyperlinked which you can use to download.

When the download completes you can install the winzip. After that you right click the file that you downloaded earlier(the visual boy advance). So right click that file then go to winzip and set the setting. After that you will see a folder underneath the actual file. So put the actual file in the folder. If you go in the folder you'll see that there is another file with the picture of a real gameboy advance. So thats your system on the computer.

For the games you can use the following link: http://www. chinagba.com/down
When you are on this site you can type the gameboy advance game title in the search bar that the top of the page. Then you just click on the game title that you come upon on. Then you will go to a different page where you'll see lots of stuff that you won't understand. Anyways go to the bottom of that page and you the links there.

Just one thing, the website http://www.chinagba.com/down sometimes doesn't work at certain time of days. So keep checking back.