Employers are expecting that you will have a wide range of computing skills. Many of these you will need to develop in your own time. These links provide you access to good tutorials to get you started. After that, it's practise, practise, practise!
Making the most of Microsoft Word
Powerpoint
Duke University (the Connected Curriculum Project)
Maple (symbolic mathematics) + more via Google
Mathematica (symbolic mathematics) + more via Google
P-Coder (A pseudocode design tool for expressing, creating and programming algorithms; also for teaching introductory programming in various languages)
SolidEdge (a free 2D drafting package from Seimens)