Using the split command is the easiest way to do this. You can use a sketch to define your parting line, or generate a surface if it is a complex parting line.
Typically I use the sketch method, once selected hit the "Cut Part" button. this will then cut your part into multibodied parts. you can then slect each body in the list and save it as a customized name.
The benefit of using Split Part is that you can go back to the part which you had used the split feature on and make changes to the overall shape and each saved body/part will update accordingly. Hope all this makes sense.
Best Regards,
Jon
Challenges are what makes life interesting; overcoming them is what makes life meaningful.
Solidworks 2005 SP3.1