Sharded SSL help again!!

[OSNewbie]

Hello forum. As you can guess, Im new to OS commerce and like many others (by doing the search) I am having problems with Shared SSL.

 

Im using Version 2.2 and when I install it, it seems fine. With-in install, I enable SSL and set my https server to point to my shared ssl space (https://secure.myhost.com/~myname)

 

Oscommerce and the admin section run fine, however, upon checkout, I get the "Page not found" error. I have read many posts regarding this, but have yet to come up with a definitive answer. Do I need to upload the oscommerce to my secure webspace? I have looked at a few URL's in here and they seem to do what I want, (i.e. Rave Knights, you have a similar set up to myself, with a shared ssl. How did you get this to work?) Do I still need to make changes to configure.php, even when I have used the "Install" ?

 

Many thanks