Do you suffer from Diaresis? Do you have an Acute Circumflex or a Grave Cedilla? If so, says the IPKat, there's no need to see a doctor. But you should get wise to the fact that Thursday 10 December is the apparently arbitrary date on which you will be able to register .eu top level domain names with twiddly bits on the letters. The culprit, or saviour (depending on your preference) is Eurid, which has done all this for you (click here for further information).
Eurid pdf with loads of twiddly letters here