Xerxes been trying maybe im not in the right place?

Install DirectX

Cause Activision is taking down old COD games' clients. Plutonium removed the pirated links to maybe be spared by Activision.

Are you joining a server? and have you tried other servers, its likely the server your trying to join has a password.

Make sure your game is closed before doing that.
Go to %localappdata%\Plutonium\storage\t4\players
Open the config file with the notepad to edit it.
plutonium.cfg is for singleplayer/zombies and plutonium_mp.cfg is for multiplayer
Change these 4 dvars to be like below (you can use ctrl+f to search for them)

seta r_fullscreen "0" seta r_noborder "1" seta vid_xpos "0" seta vid_ypos "0"

lollboy no

You can always try "Alt + Enter" or F11
If neither works go smoke and figure it out later

you mean t4 for texture changing? if so go to at bottom left corner of your screen right click your windows icon and select Run then type : %localappdata%

then go to plutonium folder then storage then t4 ((if you dont have these folder you gotta at least open waw zombies and mp once or create them yourself)) then raw then images

here you put your files that have .iwi in last in theyre name (if you have extensions on you can see them) and luanch pluto go in ga,me and theyre workin😁