Maybe you can try the phreplace (a script addon for PSPad allowing multiline replacements).
http://www.phdesign.com.au/document.php?page=software_phreplace http://forum.pspad.com/read.php?2,34061#msg-34061 -- <http://forum.pspad.com/read.php?6,36829,37086> PSPad freeware editor http://www.pspad.com
