Disable the insert key

I just got my new Lenovo notebook (T430s). Compared with the previous version of this laptop, one important change is the keyboard. Lenovo now favors the chiclet or island style “Precision” keyboard. No page up and down in the upper right corner and the delete key in the upper most right corner next to the insert key.
I never use the insert key and often hit it accidentally.
 
I looked for ways to disable the insert-key (I can’t remember I have ever used it in the past years). I found the following (taken from http://superuser.com/questions/31794/windows-insert-key-anti-functionality-accidentally-triggers-how-to-stop-it-perm ):
 
Almost anyone
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Microsoft Office language packs for free

I have a German version of Office 2010 professional, but often, I wish I had the English version. If I am reading a book on Excel Pivot Tables in English it is not difficult, but a nuisance, to find the correct commands in the German version. Sometimes, I teach in English somewhere abroad, and then it also would be nice to have English commands in Excel, Word, etc. Or if I show something to a collegue, who has the English version installed, it is nice to use the same version.
 
Microsoft sells language packs (they are not expensive), but
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