When i make and objetc and select it as a prop_static, i want to make it a vehicle or something and the world/entity button is grayed out and theres no props list at all. All i can get are textures. Do I need to associate a folder to that button? I can view all props and stuff in the model viewer tho. Any help?

What.

Not totaly sure what you are doing, but by the sounds of it you need a good tutorial to the basics of Hammer; Check out the stickies up the top of this forum or in the Q&A forum