Uhm, you would be incorrect.
SE4 mods are text files and bitmaps. Nowhere near the same as hacking a binary. Especially explorer.exe and expecting it not to make Windohs more of a doh-fest than it already is...
(edit: Well, if you just want to change a text string, maybe, but even that can mess things up if you want to increase its length and there wasn't enough padding in the original binary.)
PvK