Installed CS:S content problem

Okay so im making a DarkRP server. Yeah i know its a bad idea but i wanna do it. So i installed the CSS Content so i could use guns in DarkRP but when i started SRCDS the only game i could pick was Counter Strike? It use to be just garrysmod but now garrysmod is not on the list? Please help

Are you hosting a server from home, or renting one.

Hosting a server at home

Are you using the gui srcds, or console.

I dont know what you mean. I just got on cmd and and got to hdlsupdatetool and installed CSS and now thats the only kind of server i can make. A Css one