Hehehe
K, lets start off from the begining:
Do you remember your login name and password for the gallery?
(its probably "firstname lastname")
If you forget your password you can have the gallery program send you a new one by using the link on the login page.
There is a detailed "How To" already written up by the creators of the software. No use reinventing the wheel... by trying to retype it. (Copy paste didn't work out so well either)
There is no wrong way of uploading pictures, but I personally use the Gallery Remote program. It is a little java program that installs on your local machine and will allow you to upload files easier that the webform. But to each their own