Open File And Move Cell Data To New Workbook

I created a new workbook that contains a list of additional design requirements than our old checklist. These requirements are answered by placing a 1, 0 or .5 in the cell next to the requirement (1 = yes, 0 = no and .5 for half credit). I can't simply go to the old workbook/worksheet and copy the results into the new workbook/worksheet as the rows of requirements don't match up since some requirmements have been deleted and new ones added between the old and new checklists.
I created a command button in the new checklist and what I want it to do is:
- open a dialog box that lets me select the old checklist file (these are all excel files, but with different names).
- go the the proper worksheet in the old file (DFT Checklist) and copy a column of results from the old checklist ("DFT Checklist" worksheet) and paste them into the proper cells of the new checklist ("DFT Checklist" worksheet).
- The macro would know (i'll have to tell it) which requirements and cells are still valid answers between the old checklist and the new one. It would disregard requirements that are no longer in the new checklist.
- Once complete, it would close the old checklist without saving.