I think right now you can only watch Dream TV on Agila KU on your Dynasat box for free. For Measat Astro channels C-band you will need a server, it has been so for quite some time now. If you have a 6ft. Dynasat dish you probably have both KU and C-band LNB's in it. So set it on Agila KU, if you cant get a picture go to http://www.rdi-board.com/showthread.php?t=2232
start from the last page and search for the keys for Dream TV
you will have to go back a few pages to find them cause they haven't been changed for quite a few days, find the most recent ones and put them in the box. Dream TV is quite similar to Astro.
The latest software in the box will update your Satellite list and channels(I think). There are many more knowledgeable members here than myself whom I hope can help you out.Should you not know how to enter the keys, start another thread, and I'll guide you through it.