Haha looks like someone is posting their homework in sajha. I would have done it for you but I choose not to. ER diagram is the basics of understanding DBMS. If you don't understand ER, you will basically do not understand the logical model or the physical model, schema and anything that follows after it. At least if you know how to draw ER diagram, you can generate all other models using power-designer or othe automated software. So, pour in some efforts now and do your homework. Believe me you wil thank me later

Just to give you a hint.. Separate the main entities and their attributes  from the requirement and go from there.