Albion was owned by Blue Byte Software which was purchased by Ubisoft in 2001. Ubisoft owns the copyright to the game and downloading it off the internet without paying for it is illegal.

That said, there is NOTHING illegal about making a program that will install a "valid" copy of Albion to your n900. By valid I mean that the user MUST provide !!!!! ALL !!!!! Albion files and your program just installs those files to the n900.

Since your goal seems to be to make it easy for the user to install it, your best bet to do this and stay legal is to make a program that takes a valid CD or .iso file and install it, but make the user provide that file or cd. Then any copyright infringement is placed on the user.