Try this site, I think it is what you are looking for, good luck.
Are you upset that Nikon didn't made a battery pack / vertical grip for the D70 ?
No worries my friends, Harbortronics does!
The Harbortronics VG-D70 is a $165 aftermarket grip that:
1.provides a means of holding the camera in a vertical orientation without changing the orientation of the hand,
2.allows for a second battery, essentially doubling the number of shots on a charge,
3.adds a second shutter release button, used in portrait orientation.
4.provides additional length to the camera body when held horizontally (landscape), particularly useful with larger hands,
5.increases the mass of the camera, helping to damp handheld movement,
6.provides a standard connector for use with remote release cables, stereo camera connections, and other remote control equipment,
7.provides an alternate connection for external power, using an industry standard connector,
8.includes a place to store the camera's battery door,
9.retains a tripod mounting thread (metal).
http://www.steves-digicams.com/news/harbortronics-ships-vg-d70-battery-grip-for-nikon-d70.html.