Many Trados users complain that it is impossible to use most Trados keyboard shortcuts when working on a laptop. Using the mouse to click on the toolbar icons feels awkward to people accustomed to touch type, and trying to activate the keyboard shortcuts through the virtual keypad accessed via the Fn key often ends up as an exercise in frustration.
A simple (and cheap) solution is to buy an USB numeric keypad: mine cost only a few dollars, is very lightweight and is also useful when working on a spreadsheet or entering numbers.
It may also help those of us accustomed to enter accented characters via the Alt+number route.
If you use an USB keypad like this, however, you may have to experiment a bit: on my computer, for example, the Alt+number accented characters only appeared after hitting the backspace key. This may differ on different laptops.