Hi to all!This is my first tutorial.I had posted a challenge for veterans in QnA section which was completed by only one member and not many veterans answered it.So here's the method I super secured a file : What you need: 1. WinZip or WinRar or any other such utility. 2. A file splitting software(here FileSplit-a veeeeery old software) 3. Uncheck "hide known file type extensions" in Tools->Folder options.->View in any window Procedure: 1. Let's start with a file "to be secured.*(any extention)" 2. create a folder with any name. 3. insert the file in it and zip it and change the extension(to any name). 4. using file splitting software,split the file into 2 parts. 5. The software may name the two files by similar names,so rename them. 6. Keep one file on your HD and other on a CD,DVDetc.. 7. Now delete the original file and the file from the HD which you copied to removable device.keep only 1 part of the file there. Now you have a super secured file which ONLY you can open by : Copying the 2nd file to HD and merging it with 1st file already presnt there. Renaming the merged file to right zipped extension and extract the file. You may also try many other combinations to make people scratch their head!!!! If you liked this tut,then please repute me,I badly need it!!