New Purchaser and Changes to Panel.cfg file

Hello, I just purchased the "Gold Edition" for FS9 as well as the "PMDG MD-11" versions and I can't wait to jump in and try this, from all accounts, a magnificent addon. Just a few quick Q's.? I understand the installation procedure will change the panel.cfg file for the aircraft affected. Is there also a backup of the original configuration file performed if for some insane reason I might want to revert back to the old panel without the FS2Crew config? Even so, with the updated panel.cfg do I have a choice as to whether I want to use FS2Crew or not with that particular aircraft? Maybe I might want to fly solo that day and not fiddle with the FS2Crew program or do I have no choice, I am commited to using FS2Crew? Can FS2Crew be disabled for whatever purpose? I know, I know, why would I ever want to fly without it? I'm just curious though. I always have concerns when I make changes to my *.cfg files. Anyway, I'm looking forward to spending the weekend going through the tutorials for this fine product.Best Regards,Tom