Quote Originally Posted by Btcc22 View Post
Afraid not. The best you can do is run the game as admin and it'll move the maps from hac\maps to your game's maps folder. It works the way it does because you can't write to Program Files without admin permissions, unless you want the maps to end up being saved somewhere where nobody can find them (Virtual Store folder, like OpenSauce does).
H-Ext from 0.5.2.3 and older too has this issue for Virtual Store when should be in Halo's installion directory.

Running the game as admin is NOT recommended unless you want users to easily allow malware to infest their machine into total destruction. However, there is a solution to fix is to patch halo's executable with a manifest as I posted awhile ago without the need to run as admin. Or to disable the UAC.