HOw to add.change new image to CSS page with multishops

[ilegales]

Hello

 

I have added a multishop to our main shop

there is one image which appears on "Both" sites - and we would like to have a different photo there

The photo is i think in CSS -Enclosed is a photo

and the only way that i can change it is to goto my FileZila FTP and upload a new image there...

then it appears on both sites...

how to get a seperate image on the Alias site shop

 

Thanks