How can you rename a number of files at a time ?

Some times you need to change all the file names manually one by one...its a odd process i think...

I think for those guys this tip will be useful... if someone knows this that would be great...

Process to rename a bulk files at a time is :

Simply select all the files which you need to rename 

then type a name for a file by Pressing f2 or right click on a file and select rename - give a unique name "Abc". That's it.  It will rename all the file-names to "Abc2,Abc3,Abc4....."