Welcome to the Community Forums at HiveWire 3D! Please note that our store and forum are on two separate servers so you will require a separate login for each. The store will ask you for your Real Name (WILL NOT BE displayed to the public) and the forum will ask you for a User Name (WILL BE displayed to the public). You may use the same email address and password for both.
No you only have to send them the link to the page where you uploaded the file. They can then look at it, zoom and rotate etc. and decide on revisions if they are needed. Handy for customers who are on the other side of the world I think.