list of name changes - and old name chnages

[Logician]

Since vb doesnt have a name change feature I think you are referring a hack that changes username.

If this is the case, how the hack changes the names is quite important to achieve this request but I guess hack should be just replacing the username field in the user table which makes impossible to trace old usernames.

So as to do what you want, you need to record all names changes to a seperate table first.