Why is re-imaging better?
And won't this whole deal work only with dynamic IP assignment? (Sorry if dumb questions...not a computer professional here...)
reimaging allows you to not lose your information (documents, things you want to save, etc.), whereas reformating wipes EVERYTHING off of the hard drive and start with a clean slate...
You don't have to re-format/re-install anything. The image contains a copy of software/your preferred settings, etc. IOW - a computer setup just the way you want it - instead of going thru all the trouble of reformatting/reinstalling.
Of course - you'll have to reformat/install/setup the machine initially to create the image. But after that, it only takes 15-30 minutes to reimage and bang - it's setup just the way you like it. As far as my personal documents, etc - those reside on my server, which I back up to DVD once a week...