Hey Barrett, since Trouble here ignored your question I'll try to help you.
There is no way to lock your icons in place. If you have a crash, CPU OC fails and reboots, GPU dies, Rez changes, or even if you try and save a file, there is a high chance in certain instances that your icons will change position.
There are free plug-ins like desklock that can do what you are looking for, but as for windows, there is no way to lock desktop icons permanently until you unlock them. Not anymore anyway...
Why they ever removed that beautiful yet simple function from windows is beyond me. Sadly, even with hundreds of thousands of people asking for it to be put back into windows, Microsoft has not done so. Infact they ignore the question and requests, just like Trouble here has done.
Unfortunately, I don't see it ever coming back, because it's not like we are going to switch to a MAC because we have no lock icon function. So, they do what they want and get away with it because no one who knows how to use windows will change to a MAC unless they are retarded.
Hope that helps you...