.sps files for gba?

How do I use downloaded game saves for the GameBoy Advance?

In order to use the game saves on GameFAQs for your GameBoy Advance you'll need a GameShark, Pro Action Replay, or a similar product. Mad Catz and Datel are the distributors of these products; see their product documentation for how to use these.

that was copy from www.gamfaqs.com but i dont get it i have to get gameshark program? or wtf? just give me help and links please i dont understand that help
i have .sps files on my computer what i have download from www.gamefaqs.com but i dont understand how to open them