If you have create a site then you can edit the site. For this you go to 'my area' Then to your site, you want to edit.
There is a option 'add a new page' There you can choose from several site types. To upload different files , you can create a 'MULTIMEDIA GALLERY'.
Then you edit this gallery and can upload a file there.
You can also upload a picture in any part of your site while editing. There is an option like 'choose a new picture' there you can upload it.
If your upload doesn't work you can send an e-mail or mms to pics@peperoni.de N.B.: This e-mail or mms has to contain your site code.
The site code it to find at 'my area' then 'New media files' And then 'Activation by code' .
Hope you will find it :-) . . .
Still if you have question feel free to write.