I've read through the doc regarding setting up a local copy on the PC for development & testing. I have question about this: A prerequisite is to configure the local PC as a PHP/Apache/MySQL server.

Can I do this without impacting anything else on my PC? Our current store runs from this PC, as well as our accounting software and other things. I'm assuming that I can configure my PC as described without negatively impacting anything else - but thought I'd better confirm first.