[AccessD] A2K: Combo and List boxes sort

Hello all
Merry Christmas to all
Yes I know I shouldn't be working but what can I say? :-(((

I have a combo filled with say... tblProducts
on the same form I have a list box also filled with say...tbProducts

What syntax do I need to get the list box to highlight the same value from the combo

EG User selects Product ID 25 from the combo
How do I get the list box to find then highlight Product ID 25?

Many thanks in advance
 
And again a very very merry Christmas to all

Darren