Announcement Box (1 Viewer)

How do I make an 'announcement box' like a message box but with no OK buttons? eg screen box says "I'm busy doing something" which doesn't have to be acknowledged & can be closed when the task is completed.
I have tried to use a form which would just display a string sent to it as open arguement but a text box cannot display a variable (Me.openarg) only a field value. There is no field because there is no table associated with the form.

In the load event of the form, put the variable value into the text box, or set the deafult value of the text box to your variable.