site-wide search and replace?

does anyone know of a free/open source software to batch-process .html files?
there are a couple hundred pages i need to update links etc..
iv'e had bad luck with every program/site iv'e tried. dead links, download accelerators, spyware...you get the picture

i'm all googled out here.

 

Not sure if this is what you are after but have a look anyway.

Xenu's Link Sleuth

 

thanks, i could really use that one, too.

not 15 minutes after i posted, i found this gem:

http://www.orbit.org/replace/

it can replace text strings (with variables) within multiple files in a directory.
man, that thing just saved me days worth of manual editing.