Is it possible to install CiviCRM offline using WAMP?
So no problem installing it on a WAMP, especially if you "only" want it as an "internal address book".

You have quite a lot of fields by default, and if you need more, you can create custom ones directly from the UI, no need to develop anything for your requirement it seems.

But the easiest is that you try, either on your own install or check our demo sites at http://demo.civicrm.org