How to change file extension of various files at a time?

I had got a virus in my computer. It changed the file format of many files like jpeg to ocx or jpeg to htt and jpeg to ini.etc.


Now,how can i change these extensions at a time not by changing these one by one?|||On Windows XP and later versions of Windows, it is possible to rename multiple files at once via Explorer by selecting the files to rename, then pressing the F2 key.





100% free is


The software Ant Renamer : http://www.antp.be/software/renamer/


allows renaming many files and folders with a few clicks.


Its main features:


Change extension


Replacing strings by other


Inserting a string


Move Character


Remove several characters


Enumeration


Creation of names from MP3 Tag (ID v1.1)


Creation of names from the date and time of modification of the file


Random Names


Change case (uppercase, lowercase, first letter of each word in uppercase, ...)


Based on a list of names or a file


Use of images EXIF info


Expressions (regular expressions)

















☼|||If it changed the file formats, you need conversion programs to convert them back. If it changed extensions, you can just rename the files. (In a command prompt, ren *.ocx *.jpg will rename all ocx files in the directory to jpg.) The file extension *indicates* the file format, it%26#039;s not the same as the format.





Be careful - if there are real ocx files in the directory, their extensions will also be changed - which you DO NOT want.