RAW in progress

I am trying (fort the first time) to open a RAW file that I shot with my
D70. I'm using Photoshop7.

When I "Open as" I get a dialog box that shows the following:

Size: 5416900 bytes
Channels: Count 1
Depth: 8 Bits or 16 Bits
Header: Defaults to 0

When I click OK I get a gray image...no picture. I read the Adobe PS Help
file but did not have any success.

Can anyone help with what the settings should be to get an image?

Many thanks in advance.

Gordon