You can't change it sadly. Possibly you could ask one of the admins any one of these
Daan
Ms. Bex pspcrazy Stephy
hopefully the'll be able to change it or you can just hide your age all together so people don't know how old you are by going to the
User CP (near the top on the left hand side.)
Edit Profile (left side in the column)
Then on first thing on the page you can see
Date of Birth - December 31, 1931 Your date of birth and age are displayed in several places on the forum. Only the administrator will have access to your date of birth should you choose to hide it via the privacy option below.
Please contact the Administrator if your date of birth has changed.
Yeah well underneath you can edit it to whatever you like. Then go to the bottom and click save changes.