Use ReadyNAS instead of Dropbox to share files?

Hi folks, I hope I can find some assistance here. I'm not very knowledgeable when it comes to networks etc, although I do know how to port forward should I need to. I have tried port forwarding on my modem to solve this issue, to no avail. Anyways ..

I have a ReadyNAS Ultra 6 using RAIDiator OS 4.2.27.

I produce video files for clients. I am tired of uploading to Dropbox and sending clients download links. I want to simply send my clients download links to files on my NAS. I have been told this is possible, I just cannot figure out how to do it!

My setup is as follows.

Running Windows 7 and I have a separate modem and router.

Modem: Netgear CGD24N (192.168.0.1)
Wifi Router: ASUS RT-AC68U (shows as 192.168.0.7 on modem LAN IP)

My ReadyNAS is connected via cable to both the Modem (IPv4 address: 2: 192.168.0.2) and Router (IPv4 address: 1: 192.168.1.116).

I have created a share on my ReadyNAS. Default access is Read-only, Allow guest access, WebDAV Enabled.

Can anyone forward me relevant advice or link to any online tutorials?

I can only find this (http://kb.netgear.com/app/answers/detail/a_id/24784/~/configure-webdav-access-to-readynas-os-6.x-from-windows-xp) which I think provides a solution to do what I want to do, however I use a different ReadyNAS OS and Windows 7.

Like I said, I just want to be able to provide links to my clients so they can download their files directly from my NAS instead of Dropbox.

Is this possible?

thanks ...