is it possible to add new field in registration to put "ID "

[nice_hero60]

hello,i would like to know if it's possible to add a new field for ID for example.
so any one wants to register,he has to add his own ID.
so after registration this ID will appear in his own profile.

example: this link: http://gamezconnect.com/nDTsI6Scll0kZ499EsCOKb33
we take the ID:nDTsI6Scll0kZ499EsCOKb33
thanks for help. :D

[Lynne]

Just use profile fields - http://www.vbulletin.com/docs/html/profile