I just built my computer, need help?

Ok, I finished my computer. I installed the motherboard drivers disc and everything's else's discs. After I installed ASRock's driver CD, There is a Zynga Games shortcut on my desktop, and pinned to the taskbar. I deleted the shortcut and unpinned the taskbar icon, but when I restart it comes back. I am running windows 7 professional. How do I remove it? I can't find it in the programs under "uninstall a program"