G'day mate.
First thing you should do is to make a backup of each maps
server.zip file, just in case you fuck something up.
Use WinRAR to extract the files you downloaded to your desktop.
Go into '...Battlefield 2\mods\fh2\levels\hurtgen_forest' and open the server.zip, then drop the
ai, AIPathFinding, and GameModes folders into the WinRAR window.
Close WinRAR, save and update the server.zip.
Finally, just drop the
hurtgen_forest.desc into the info folder (...Battlefield 2\mods\fh2\levels\hurtgen_forest\info).
That's all folks, go shoot some bots...