PSCS3 won't open Nikon D7000 RAW files

Question

I just purchased a Nikon D7000. Shot some RAW files and tried to download to iPhoto, not possible. SO, installed Nikon VIEW NX2, and Transfer 2. RAW images downloaded to my computer (late 2008 Macbook Pro, Leopard 10.5.8, Camera RAW plug-in 6) into ViEW 2. But showing the followiing format:   _DSC001.NEF
Normally, it should read:  DSC_001.NEF
SO within the Nikon software, I can work on the image, but I cannot export it into PS.  It comes up with an error that the image format is unreadable.  (Nor can I find how to get it out of VIEW NX2 , but that might just be my lack of reading all the info there, will see)
I contacted Nikon and they told me to change something in Image Capture in my MAC apps. I went there, but Image Capture was already set to the change they asked me to do.
I tried to download again, but same problem. I tried to download into iPhoto, in order to try and get it into PS,  but it wouldn't. All files were unreadable.
JPEG, however, does download, with both file formats, and opensin iPhoto and PS, whether there is a _ first or a letter first.
SO, I don't know what to do. I am assuming all my plug-in's are up to date.
My D70 RAW transfers fine!!! The D7000, not.
Any info out there??? Nikon has not replied back a second time when I responded to them.
Thank you for any help. I welcome it all.

Answer 1

Thanks, all of you.
I downloaded Adobe Camera Raw DNG 6.4 (Not 7.1 as I read it worked slow and had some bugs still in it) and backcomplied it to open in a 4.6 format. It works to open RAW in my PSCS3 now. Great! Of course I definitely will be checking out PSCS6 Extended for an upgrade, but for now, I can use this.
I have 3 questions that I am not clear on.
1) When I converted, I included the 'original raw file' within the DNG, as opposed to NOT incuding it. They say you can open it later, that it is inside the DNG. Please someone explain to me how this can be when I am adjusting and cropping my files after opening in RAW.? (OK I know nothing about this). Where do I find the file???
2) I did notice a little bit of color loss, or maybe it is in the Adobe 1998 color space, but it seemed to transfer fine. Is this the case?
3) If I save in Tiff, would the embedded file still be in the DNG ??It would no longer be a DNG file. I am asuming that I SHOULD be saving an original conversion in DNG for archives and to make copies from.  I really do not understand this. I am saving the original NEF file in the Nikon VIEW NX2 for later use as a backup.
Thank you again.