ComputerBB

Open a Command Prompt window and leave it open. Close all open programs. Click Start, Run and enter TASKMGR.EXE Go to the Processes tab and End Process on Explorer.exe. Leave Task Manager open. Go back to the Command Prompt window and change to the directory the AVI (or other undeletable file) is located in. At the command prompt type DEL <filename> where <filename> is the file you wish to delete. Go back to Task Manager, click File, New Task and enter EXPLORER.EXE to restart the GUI shell. Close Task Manager.

If you can't delete an undeletable file, that would be impossible by saying somthing is undeletable it means taht it cannot be deleted. I get what you mean though.

everything can be deleted, it just depends what you use. If you get an error message saying it cannot be deleted, it just means that Explorer cannot delete it. you can edit anything in the command line with the right commands.