is anyone good with computers?

[amnotspecial]

Alright, so I kept getting some thing when going to petridish that I required an Active-X plugin, so I eventually clicked on it and installed it. It ended up giving me a billion pop ups, and some web search thingy. I managed to uninstall a lot of the whatever was on my computer, but one pop up (Aurora or something) still keeps appearing, as well as the web search when I turn on my computer.

Does anyone have any idea on how I could get rid of this? Please?