problem with extending CreateUserWizard control

Hi,

i want to extend info when creating an user with the CreateUserWizard
control. So i 'templated' it and added my own label and textbox. I know that
the username will be sent into table aspnet_Users and his emailaddress in
aspnet_Members table. But in which table will the content of "mytextbox" be
sent? Do i have to create my own tablle in the Aspnetdb file? And then, How
can i specify that?

AutoGeneratePassword="True" >




AssociatedControlID="UserName">
ValidationGroup="CreateUserWizard">
....
AssociatedControlID="Email">
ValidationGroup="CreateUserWizard">
....
AssociatedControlID="mytextbox">
ValidationGroup="CreateUserWizard">
....

Thanks
Mich