Can you install my router without the disk

Yes you can do it to.
First connect your router to your computer lan port with ethenret cable connection.
Then you can access your router with intenret explorer with following link.
http://192.168.1.1
or
http://192.168.0.1
type username as "admin" and password as blank or "admin"

then configure as your isp provider settings.
Like if your connection has user name and password then configure wan as "pppoe network "
If you want ip from router then enable DHCP on it.
Then save settingsd and restart the router.

sure, but it will be easier if you goto the companies website and download the drivers.