How can I replace 2000 ford focus cv joints?

Hello, I have a 2000 Ford focus 1.8i , it does not have abs. I need to know how to replace the outer CV joints as they are knocking on tight turns.. the bearings and link arms were replaced 2 months ago and they ar all fine..I have the joints. just need to know how to go about it. Ive been told that thay are not that hard to change but have been given no more info... Can anyone help me please....