Okydoky, I did the changes in codebase.php as you mentioned and I must say: YOU ARE SO COOL! ;-))
I'm honestly impressed about the support given for a free software. Chapeau, guys!
At the end I've edited the register.php in CPM-root more than I did with the PS-codebase but I think these changes could be of interest for many users of Stramms PS-plugin as well, so I'll post them here.
If users have to register anyhow when ordering prints etc, why shouldn't they register first and THEN have the shopping option?! Anyhow I changed my register.php, giving it some more required fields to get the full name and full address of the registering user, so I'd already know where to send the stuff that they will possibly order in future. According to Sami's Post in cpg1.4.x Support (see
http://forum.coppermine-gallery.net/index.php?topic=37086.msg175000#msg175000) I've added/changed the Profile-Fields 1-5 in register.php for Fullname, Street, Zip, City and Country, now required. With the modification of the codebase.php in PS-Plugin (mentioned above) I don't need two registration-forms anymore and I don't have to deal with people just clicking and adding to the photo-basked for fun without filling ie their full name and address in the registration-form before the ps-checkout. Perfect to my needs!
My configuration in admin-panel is set so users can register but get an automatic email with the activation-code. As soon as they confirm the regsitration they can log in and if they want: order somethin'! ;-)
Once it's finished my Gallery will be filled only by one user/admin, people can browse the gallery and if they want to get prints or high-res-data they can register and order (but not upload or manage anything more than their profile though). Not now, maybe in the future. I'm still working on it so I can't post a link yet but I will soon and if possible I'll try to contribute here, as far as I can.
Kind regards and thanks again,
Rich