File list (Check if you may need any files):
lesson7
.......\Last Loaded lesson7.DBK
.......\Last Loaded lesson7_1.DBK
.......\Last Loaded lesson7_test.DBK
.......\lesson7.DSN
.......\lesson7.PWI
.......\lesson7_1.DSN
.......\lesson7_1.PWI
.......\lesson7_old.DSN
.......\lesson7_test.DSN
.......\lesson7_test.PWI
.......\project
.......\.......\ExtDll.iex
.......\.......\STARTUP.A51
.......\.......\STARTUP.LST
.......\.......\STARTUP.OBJ
.......\.......\lesson7
.......\.......\lesson7.M51
.......\.......\lesson7.hex
.......\.......\lesson7.lnp
.......\.......\lesson7.lst
.......\.......\lesson7.obj
.......\.......\lesson7.plg
.......\.......\lesson7.uvgui.Administrator
.......\.......\lesson7.uvgui_Administrator.bak
.......\.......\lesson7.uvopt
.......\.......\lesson7.uvproj
.......\.......\lesson7_uvopt.bak
.......\.......\lesson7_uvproj.bak
.......\sourcegroup
.......\...........\lesson7.c