They are all the same concept.
Just different versions. There are Diff Tuts. Each One just has a diff author or another apporoach. Like its says, use TotalCommander, and use th plugin to re-pack it. (searh for it on this forum "Cbf.cx" i think its called)
AS far as the hex editor is concerned, theres no Real good one, SOme use WInhex, so use soe otherone. THe best was it to download one or 3, see which one you like. I use A.X.E. i like the GUI it simple ive used it for 5yrs.
Just GOOGLE for a Hex Editor, youll seem them around.
Its not too hard, and you could always set up a conversasion with some1 on MSN or ICQ and go step by step.
Try Some other sites they too offer a tutorial on how to extract it-
Just Make sure you RENAME your current INSTALLED game Version to somethig other than the Default Directory Name: Vietcong
try VIETCONG VERSION (Whatever)
then Run Setup ad click on UNINSTALL, it wont uninstall it, because its looking for that Vietcong Folder that you renamed, it just deletes the Desktop shortcuts and startmenu shortcuts.
Just check this posts about every 6hrs-12hrs