Break link to toolbox part

This has probably been asked, and I have found some info about it, but nothing that worked.

I want to create a spur gear from the toolbox, then I want to break all the references to said gear so I can customize it. Once I create the initial geometry, it will never need to be changed again, ie more teeth, face width, ect.

I've read that I need to use the sldsetdocprop.exe app to break the link. If I do this, the part shows up with a regular part icon in the FM tree, but still has the option to modify the toolbox definition. Any mods I do to this part show up in other instances of the toolbox spur gear.

Can someone please explain what I need to do to make a part based on a toolbox part static?

I'm using SW2010 SP1.

Thanks,

Paul

SolidworksToolbox