Select from the menu Format --> Unix. You can also select unix as your default file format in the settings --> files and Dir --> "new file format"
If you to do as batch you need a program like dos2unix. Search in Yahoo or google "dos2unix winodws" or "dos2unix.exe" -- <http://forum.pspad.com/read.php?2,52821,52824> PSPad freeware editor http://www.pspad.com
