4
I would also recommend getting Crimson Editor. (free)
http://www.crimsoneditor.com/It has a very handy "search in files" facility. Just add the text or line of text you are searching for.
Then use the "browse" facility in the "search in files" dialogue box to browse to your XOOPS "html" folder on your PC. All the files containing the chosen text appear at the bottom of the screen as hyperlinks, and you can quickly jump to the file or files concerned.
Remember to check the "subfolders" option when searching in files