Changing selected index in a list when a button is pressed

[Tyko via AccessMonster.com]

I currently have a form which I navigate through forward and back buttons
(not default navigation buttons), but also with the help of a list. In the
list I have all the names of the persons in the header and when you press the
name you will jump to the corresponding record.

What I need to do now is to update the currently selected person in the list
if you press the next record button on the form so it matches the info shown.
Is there anyone who know how I can do this?

 

[Tyko via AccessMonster.com]

Edit:

it should be: persons in the table
not: persons in the header