Key broken on laptop

i was complaining to my friend that one of my keys was sticky so he told me to take it out. So here i am ripping my key out after i did he was like ''by the way, don't do that with laptops :]'' so yeah now o believe it broken. i know how to put the snapons back together but it lays flat and it looks like the bottom of the circleish snapon is broken where the two little poiny things are. So i can put it in and the top part of it stays in but the bottom always comes out. But i can hold it upside down and it wont fall out. So.... any tips on where to find emachines D620 keys?or maybe theres some whay to fix it my self...

ps apparently they don't have it in the product section so im making it someting random