MS Access Replace in query Update

There is a usefull internal Replace in MS Access to be used in queries :
Update Table1 Update Field1=Replace (Field1, 'Test', 'New')

But of course this can't be called from ADO (or DAO) from VB6

I tried queries, stored queries etc...
No way to find a solution (yet)
The only one is to do a query and update each record :(

If someone has a solution it could be great.

Thanks