How to install Ghost 10.0 on windows 7

Hi guys, 

i'm trying to install a Norton 10.0 on windows 7, but it does not install.

serching on google i understood that the only way to install a ghost on windows 7 is to install the 15.0 version.

so i downloaded it and when i try to put my norton 10.0 key , it does not work.

do you know if i'm eligible to have a key for the newer version? or my key is only for norton ghost 10.0?

Thanks everyone.