You should look at computers packaged as "Media Center" computers.
Here is HP's Media Center
Comes with things like USB2, Firewire, DVD burner, 7-in-one digital card reader, video input, lots of memory/hard disk space and a respectable video card.
I have not heard of a replacement for the CD yet.
Most of the new computers come with DVD burners now.
Those burners also burn CDs.
Enjoy that D70. You can use the new computer to create some DVD slide shows.
I am planning on buying the Nikon d70. I am also shopping for a new PC. What features should the PC have to avoid regrets?
Also, I heard that burning files to CD will only last a couple of years. Is this true?