Microsoft Windows 98
The egg:
A slide show of the Microsoft campus

How to crack it:
1.  Open Windows Explorer and find the Windows folder (usually C:\Windows). You may need to click a link in the Explorer window to view files and folders inside the Windows folder. 
2.  Select the Application Data and Microsoft subfolders, and click the Welcome subfolder. 
3.  Right-click the file weldata (may be labeled weldata.exe) and select Create Shortcut. 
4.  Right-click the weldata shortcut and select Properties. Under the Shortcut tab, locate the Target edit box and type one space and You_are_a_real_rascal (include the underscores) at the end of the text already in the box. The result should read: "C:\WINDOWS\Application Data\Microsoft\WELCOME\WELDATA.EXE" You_are_a_real_rascal 
5.  In the Run box, select Minimized and click OK. 
6.  To start the show, double-click the weldata shortcut.