In some European countries, such as Germany, the Q and Z have been reversed on the keyboard, thus the first six letters are ZWERTY.
The Scandinavian layout keyboard I'm using to type this text has a slightly smaller Enter key than the keyboard ThomasC posted a picture of. Instead of the lower left-hand corner that extends to the middle row, there is one more separate key, i.e. three more keys after the letter L. Two of these are for the "extended" characters Ö and Ä and above them, next to the letter P, is Å. The semi-colon and the colon are on the bottom row next to the letter M. Oh, and the left Shift key is shorter too, because between it and the letter Z, there is another additional key which has the <, > and the pipe characters on it.
In Windows XP it's very easy to use the language bar to change the behaviour of a keyboard so if you can type without looking at the keys, you can use the American configuration and be able to type correctly no matter what is printed on the keys.