Ubuntu install matlab 2007.

Have the following errors:

-------------------------------------------------------------------

An error status was returned by the program 'xsetup',
the X Window System version of 'install'. The following
messages were written to standard error:

/data/matlab/update/install/main.sh: 168: /data/matlab/update/bin/glnx86/xsetup: Permission denied

Attempt to fix the problem and try again. If X is not available
or 'xsetup' cannot be made to work then try the terminal
version of 'install' using the command:

install* -t or INSTALL* -t

-------------------------------------------------------------------

Sorry! Setup aborted . . .

To solve it:
1. umount /cdrom
2. mount -t iso9660 /dev/cdrom /cdrom
3. /cdrom/install
Now it will start. I don't know how to install matlab if I copy all the files to the hard disk.