You don't import a .dsc file. The .dsc file is a file on the memory card that tells the operating system how to deal with data on the card.
There's information on how to work with DSLR cameras here:
I apologize. That is what the file name is. Our Nikon DSLR's encode the footage as a quicktime movie file and when we drag them into Premiere, they just come in as audio files. Do we have to convert every clip to an mpeg to import to Premiere?
>quicktime movie file
What version of Quicktime do you have installed?
Also, exactly what is inside the file?
Read Bill Hunt on a file type as WRAPPER http://forums.adobe.com/thread/440037
What is a CODEC... a Primer http://forums.adobe.com/thread/546811
What CODEC is INSIDE that file? http://forums.adobe.com/thread/440037
Report back with the codec details of your file, use the programs below... a screen shot works well to SHOW people what you are doing
For Mac http://mediainfo.massanti.com/
Once you know exactly what it is you are editing, report back with that information... and your project setting, and if there is a red line above the video in the timeline, which indicates a mismatch between video and project
Do we have to convert every clip to an mpeg to import to Premiere?
You don't have to convert them, just rename them. Bridge can do this as a batch process.