Script to copy files with variables

I need a script I can schedule that will move files out of folder A and move them to sub-folders of folder B.  If there is not yet a folder in folder B named with the MAC address the script would need to create one.

The first 12 characters in the file name are the individual MAC address of the hardware device uploading the file, following the underscore is the date the file was uploaded.



Folder A = C:\FTP SERVER
Folder B = C:\Machine DATA
Subfolders of Folder B = C:\Machine DATA\0027AF110121   One folder for each mac address


0027AF110121_20130501.zip
0027AF110121_20130501.zip
0027AF110124_20130501.zip
0027AF110124_20130501.zip
0027AF110124_20130501.zip
0027AF110121_20130501.zip
0027AF110118_20130501.zip
0027AF110116_20130501.zip
0027AF110118_20130501.zip
0027AF110118_20130501.zip