How touse Or in unbound txtbox

Hi
Working in a relational db in Access 2003 I have a continuous form (MyForm).
In Header section of the form I have an unbound txtbox control to enter
words separated by Or. After entering the word(s) user click a button to
trigger searching the word(s). My form is based on Allen's Browne search
example. Thus searching controls are in Header and founded records must be
displayed in form2 rather than in Details of the Myform.

Thanks in advance