Word 2007

After some kids where playing with my laptop, some of the keyboard shortcuts stopped working in Word 2007. Actually it's Ctr+Z, Ctrl+A, Ctrl+S, Ctrl+X, Ctrl+C and Ctrl+V. Although the alternative combination for "select all" still works "Ctrl+Num5". Although, at the same time, all shortcuts are...

A friend sends us word documents that arrive with a "_doc" extension, and Word 2007 Home edition won't open it unless we manually change the extension to ".doc." Windows Vista seemingly won't allow me to name Word as the program to open "_doc" files. Thanks for any suggestions.

This is utterly frustrating. Word refuses to set itself to EN-UK. I'll load up a document and it always defaults as US. So, I click the language at the bottom, select English UK and set it as default. Okay, fair enough, it goes to English. But, then for no apparent reason it'll switch back to US...

What is that annoying box and how do I remove it? Please help me! Thanks in advance!