Update
They updated the twonky web site, so the new URL for that is:
http://www.twonkyforum.com/unsupported/4.4.18/
and
http://www.twonkyforum.com/unsupported/5.0.68/
the bottom URL is for the latest software but I am running the older version top 4.4 on my NAS and have not needed to bother with it since my first install using 2 western digital green 1T drives, theres also a Forum on the Twonky site Devoted to the D-Link DNS, you can go to the site map and go to Forums or use the link below.
http://www.twonkyforum.com/viewforum.php?f=10&sid=6caf63bf6ed56b10c54aa95d8616b1f1
Next you will need the fun plug at
http://www.inreto.de/dns323/fun-plug/0.5/
there is a list of files, but all you need are 2
fun_plug
fun_plug.tgz
Drag and drop them onto your d-link and restart it, and they should just install with nothing more to do from there, they explain it on the fun plug site in more detail, but they also make it sound fare more complicated then it is, thats the link below,
http://wiki.dns323.info/howto:ffp
Next you will want to install twonk, grabe the software from the site using the links at the top, its only a 30 day trial, but that should be long enough to help you make an informed decision about purchasing it, I did with no regrets,
Follow the instruction From The Manuel, bellow.
Now using the twonky software, open NASSetup and accept the disclaimer by pressing the Accept button.
In the next screen, you must enter the IP-address of your NAS in the field IP address of NAS.
If your NAS uses a static IP, enter this address, otherwise enter the IP address, which was
assigned by your router during the network setup (DHCP).
The other fields and checkboxes on this screen are pre-filled with default values for this platform, and typically there is no need to change them.
The text fields user and password are used for accessing the NAS as super-user via telnet
protocol. If you have not changed any user or password on your NAS you should not change
these fields. The name of the super-user is typically root, but this name may vary from platform to platform. On some NAS you do not need any user and password information for telnet access. In this case the fields are empty
If you are planning an upgrade TwonkyMedia to a newer version, you can decide to unmark the checkbox uninstall old server. In this case the new version is just overwritten and previous settings are not lost.
If you plan to uninstall TwonkyMedia, you should mark the checkbox uninstall old server and unmark install new server.
For a clean installation it is recommended to mark both checkboxes In many cases you need to reboot your NAS to start the server afterwards and the checkbox start server is greyed out. On other platforms a reboot is not necessary and you may choose to start he server immediately after NASSetup has finished.
Before continuing you should disable your windows firewall
(or open at least TCP port 9000, whichi is used during the next steps).
If your PC has more than one network interface, you should also disable all except that one, which is in the same network as your NAS:
Press continue to apply these settings and to continue with the installation.
The installation process will stop a running server and will copy all files onto the NAS.
Depending on your NAS, other windows may open and close in a short time frame. The
platform dependent progress of installation is shown in the big information window in the
centre. The installation procedure itself should not take longer than a minute. Close the
NASSetup window with the exit button
After successful installation you could use any browser to configure TwonkyMedia. Open the
URL at port 9000, e.g.
http://192.168.1.77:9000
and thats it, basically you type the NAS IP, Maybe your password, accept, install and next and your finished, just go to the above IP and configure Twonky and thats it, their explanation of the same thing was more detailed, but they make sounds so complicated, to me anyway, good luck and enjoy.