Resolved my self, tks in other case...

In userform have a combobox1 filled with:

01-GENNAIO-2008
02-FEBBRAIO-2008
03-MARZO-2008
...
12-DICEMBRE-2008

Iin event change of combobox1 (admit i select 01-MARZO-2008) how to fill combobox2 with all day of the mounth selected?

note:
01,02,3...12 in left ius the number of month