I don't know how you are accessing this forum. But at the top of the Adobe Camera Raw forum page, the one that lists all the topics, there is a link to the DNG converter. If you indicated your operating system, I overlooked it. Here is the link to the DNG converter download area, but on the right side near the top you will have to choose which one you want, Windows or Mac.
thanks for the info , i have already managed this part, once i have down laoded the file what happens next? will photoshop reconignise the file or do i have to add the file to photoshop if so would you let me know how?
I don't now how the Mac version works, but with Windows the latest DNG converter comes packaged in an installer that will install the DNG converter in a folder, "C:\Program Files\Adobe\Adobe DNG Converter.exe". This is a change from how it has worked in the past. As I understand it, the DNG converter needs to be in this location to work properly with the camera profiles that also work with Lightroom and Camera Raw.
What I did was create a shortcut for the DNG converter on my desktop. When I want to convert my images I open the folder that contains my raw images and drag them onto the shortcut. This will start the DNG converter. Then all you have to do is specify where you want the DNG files saved and click on the Convert button. After the conversion is completed, start Bridge and navigate to that folder and start working with your DNG files.
As Ramon indicated, the DNG converter is a standalone program. Photoshop does not use it, nor does Lightroom. It is updated at the same time Camera Raw is updated. You always want to make sure you are using the latest version of the DNG converter. It will create DNG files that can be opened by any version of Camera Raw since version 2.4.