text field to combo box

hi. im working on my project assignment and would really
appreciate any help or suggestions.

i have a form with File Type and File Name fields. i would like to
store files that i have dload be it mp3, .exe and such. after i have keyed
the data (lets say in Form A), i would like to monitor them in a different
form (say Form B). my questions a
1) is it possible to make the File Type and File Name field of Form B to be
Combo Boxes and the data source is the ones i keyed in in Form A?
2) if question 1 is possible, and if i choose File Type : mp3 in Form B,
will i able to retrieve all the mp3s that i have in the File Name fields
in Form B?
When i choose mp3 in the File Type, can it linked to all mp3 to be
displayed in the File Name Combo Box?

thanx in advance!