Finally after too many tries i did it. I can use photoshop on ubuntu now. I had lost my faith that i will ever can use photoshop on ubuntu.
I did the following steps:
sudo add-apt-repository ppa:ubuntu-wine/ppa
sudo apt-get update
sudo apt-get install wine1.7 winetricks
winetricks atmlib gdiplus msxml3 msxml6 vcrun2005 vcrun2005sp1 vcrun2008 ie6 fontsmooth-rgb gecko
and then i downloaded the following Photoshop CS 6 Portable. Some people say that also normal (and not portable) photoshop CS 6 and CC can work on ubuntu with these steps...
Διάφορα άλλα θέματα που δεν ανήκουν στην οικολογία αλλά ούτε στις εργασίες στο κτήμα.