Update Query

[DANY]

Hello to all,

Msaccess 2003

I want to extract anything after the SLASH (CustNo) and update
another field (OrderDate) in the same table.
I am looking for a function to do this because my table is big.

Any help would be appreciated
thanks a bunch

TableA

Before
===========
CustNo (text)

2343/98A
4654/91B
5674/89W
3673/00W
6788/02C
5775/05D
7895/0D

After (OrderDate)
==============
1998 or 1/1/1998
1991 or 1/1/1991
1989 or 1/1/1989
2002 or 1/1/2002
2000 or 1/1/2000
2005 or 1/1/2005
2000 or 1/1/2000