Concatenating

I need to have the controls (images) in the form, frmName evaluated to find
out which ones will be made visible.  The names of the controls are
Image51X, Image51Z, Image52X, Image52Z, etc.  The code needs to read:

 Do While...
  Forms![frmName].[??????].Visible = True
  .MoveNext
 Loop

I am unable to get the syntax correct to increment to image names.

-- 
Bob Rice
www.geocities.com/arrice.geo