upgrade

Hello.
I have bought cubase 4 in 2008, and i need help. Can please someone explain how can i upgrade it to the latest version of cubase if its possible and how much it will cost me to do that.

Thank you very much.

Just go to the Steinberg Storeā€¦
http://www.steinberg.net/en/shop/buy_product/product/cubase-pro-8.html
and select the upgrade from C4. It says $299 here. It may vary depending on your location.