If you can stand a command line, the C-style option below might work. I've used this one and gsar.exe both in various batch processes, can't recall offhand now why I needed both of them... maybe one of them didn't want to replace in place? hmm... <walking off muttering to himself...>
Find And Replace Text v1.99b by Lionello Lunesu
Usage: FART [options] [--] <wildcard>[,...] [find_string] [replace_string]
Options:
-h, --help Show this help message (ignores other options)
-q, --quiet Suppress output to stdio / stderr
-V, --verbose Show more information
-r, --recursive Process sub-folders recursively
-c, --count Only show filenames, match counts and totals
-i, --ignore-case Case insensitive text comparison
-v, --invert Print lines NOT containing the find string
-n, --line-number Print line number before each line (1-based)
-w, --word Match whole word (uses C syntax, like grep)
-f, --filename Find (and replace) filename instead of contents
-B, --binary Also search (and replace) in binary files (CAUTION)
-C, --c-style Allow C-style extended characters (\xFF\0\t\n\r\\ etc.)
--cvs Skip cvs dirs; execute "cvs edit" before changing files
--svn Skip svn dirs
--remove Remove all occurences of the find_string
-a, --adapt Adapt the case of replace_string to found string
-b, --backup Make a backup of each changed file
-p, --preview Do not change the files but print the changes
