HELP finding the clips for a CPU fan

[ShannonRyu]

I was cleaning out my sisters 7 year old Gateway and noticed one of her clips is broken. I have no idea what type of 'socket' it is because I was looking at just buying a new fan but I want to make sure it fits into the two black brackets that are fastened onto the motherboard. The model is MFATXSTL ELP 500X if that helps. The clips are metal and fasten on the side and each end of the black brackets. It has a 1.5GHz Pentium 4.

Any help is appreciated.