1 Answer

If you need to use it constantly change the regional and language settings in the control panel to reflect your needs. if you just want to use it once or not very often you can use the character mapping tool. to open that go to start, programs, accessories, system tools, character map. find it in that list and hit copy and you can use it that way.

There are also several special characters that have an ALT keystroke shortcut, that is, you hold down the ALT key, and type in a four digit code on the number keypad on the right hand side of your keyboard. If there is an ALT keystroke shortcut for a particular character, it will be noted in the lower right hand corner of the Character Map window. The e with an umlaut (the dots) is ALT+0235.

Read more: http://wiki.answers.com/Q/How_do_you_type_the_letter_e_with_two_dots_above_it#ixzz25EMJj0Qd