Oh s***, power outage again!. I need to get my report done by tomorrow. I also need to go back to my previous version without having continually save-as the files. This application is the solution for your problem!
Idnaf.TukangBackup is an open source application to backup your files with additional date and time added into the file name. It will back up your file into a single “ZIP” compressed file.This format is actually easily opened natively with Windows XP +. So, you can return to your previous backed up file without continually using “save-as” file (as I always forget to do this :p ).
This application was completely written in C# (Visual Studio 2005) and you will need .NET framework 2.0 to run the application.
System requirement : Windows with .NET framework 2.0 installed
In the following link I uploaded also the source code + binary.
Engine used : SharpZipLib