What exactly would you like to see? You can open (small) mdf files in notepad and see at lot of gibberish, but I assume that's not what you want.
Concerning the ldf files there are several logreader tools available like LogExplorer or ApexSQL Log.
If you want to get more info about the internal storage of the data in the mdf file hav a look at http://www.sqlinternalsviewer.com
[font="Verdana"]Markus Bohse[/font]