witrh ADO populate combobox with unique vale in table

[luca90]

Have a mdb mymdb.mdb in c:\mydir.
In this mdb habe a table mytable
In table have field myfiled

In this field have:

AAAA
AAAA
BBBB
CCCC
CCCC
...
ZZZZ

how to fill with unique value from field the combobox mycombobox.

AAAA
BBBB
CCCC
...
ZZZZ