Question : MS SQL help

Hi,
new to SQL so sorry for the very simple question!

Ive got a table with the following information

User_ID, Old_User_ID, MGR_ID
00123,123, A1
564,,B3
292,,00123

The problem is, the ID i want to know is always the "Old_User_ID" if this value is listed.
So in the 3rd row, we can see that the user has a mgr_ID listed as 00123, however this ID should actually be 123?

I got this far, however im not even close!
I presume i need to create a new view, that has all my columns plus a new column, which is called "Actual_MGR_ID" or something?
If an OLD_USER_ID is not listed, then USER_ID is used.

SELECT DataMini.*
   FROM DataMini
   LEFT JOIN DataMini AS DataMini_1
   ON DataMini.Supervisor_Empno = DataMini_1.File_Number

oh and im writing this in MS Access 2003 - SQL View

Hope this makes sense?

Answer : MS SQL help

This should take care of it.....