Problem probably located:
I have found a description of my problem here: http://bizforums.itrc.hp.com/cm/Ques...7a778c,00.html
Three posts down it tells that his is probably a macro problem. So, I renamed all files named "normal.dot" to "normal_.dot", and guess what. Wordpad runs fine again.
Going to reinstall office now, and see if the problem arises there.
Office XP installed, no problems... new "normal.dot" files have been placed.