Not to burst your bubble (because my intention is not to shoot down your ideas), but that's not how things work. CBS isn't just sitting around waiting for people to contact them with pitches, especially people with no writing credits to their name. They already have a stable of talent at their disposal for whatever projects they decide to do in the future. Now here's my advice, for what it's worth. If you seriously think you have a gift that you want to share, write a story that takes place in your own universe. Use Trek as an inspiration, but stay as far away from it as you can and try to come up with something original, because as Takeru said, your chances with ST are slim to none.