I would like to create a form similar to to one in a FoxPro for DOS 2.6 application.

      ----------------------------------------------------
      |                                                  |
      |                    ----------------------------  |
      |   Available drives |drop down of drive letters | |
      |                    ----------------------------  |
      |                                                  |
      |                    -----------------------       |
      |  Avaliable folders |drop down of folders |       |
      |                    -----------------------       |
      |                                                  |
      |    a text box where user could enter the         |
      |      the filename.extension                      |
      |                                                  |
      ----------------------------------------------------

where availaible drop down list of folders would be populated after a drive letter is selected and then it would be enabled.

My problem is how to get the first two drop downs (available drive letters and then folders on that drive). Is this possible? If so how.

TIA