You have to first hit the "go advanced" option.

Once you have done that - then you will have the option to delete.

If your post is the first post on a thread, and if others have replied, then the option to delete is not there.

And as Chemar said, the moderators can calways help you to delete or edit a post. Just point us in the right direction and tell us exactly what you want, and we are happy to help

Liz