I agree, if I'm right, this forum software allows custom profile fields, so it should be a matter of adding that and editing the template. I'll see what I can do.
Edit: Olz, custom profile fields work without having to change the templates, so it's all the easier for me. I've added the profile field, you can set it by editing your profile, in the 'forum profile' screen thingy, at the bottom 'o yon Page.
I can also add other profile fields if anyone's interested.