Hacking gba-usb cable questions

[Infinite_zero]

So I bought a GBA-USB cable at a local store and was wondering if I could use it for anything nifty. Best case scenario perhaps dump some of my carts? Or is there a way to use it to link up with the PC so I could use it with the GCN emulator and play FF:CC, etc. with it? It is a gameshark branded cable, if that makes any difference.

Thanks for all the help in advance.