That certainly looks like it................and the user name/password is not as I originally posted, according to that page they are :-
Telnet 192.168.1.254
Login name: SuperUser
Password: O2Br0ad64nd
It would still be prudent to check on the bottom of the router when you receive it.....just in case of any changes.
As to why not to use the disc.......it is not needed to get you up and running and may even contain bloatware, tool bars, ISP branding etc that you may not wish.
Of course there is nothing to stop you putting that disc into the reader and whilst not installing, open it and see what it carries...there may be something you want.