what else should i have or rather what do i need???
That depends on what else you want the server to do or not do.
where is the line that has what game type is running????? this way i can change it from versus to co op when i want...
You will need to use the following in console to change the type when you want it changed. Another option is if you are running Metamod:Source and Sourcemod, you can add an admin menu for it in adminmenu_custom.txt.
Execute the following in console while in the server or through HLSW. Possible modes are coop, versus, survival, realism, teamversus, scavenge, teamscavenge.
If you have Sourcemod installed, you can use the following command through your client game console:
sm_cvar mp_gamemode "coop"
We use Sourcemod and I know the sm_cvar command works to set it, but I am not sure whether the direct command (mp_gamemode "coop") works from the server console or not. Seems like Sourcemod was needed to expose the cvar, but it has been a long time since we had a problem with it.
Another note is that once you change the cvar, you may need to change the campaign or vote to restart the current one. I know when we change to survival, it doesn't fully kick in until we vote to another map.