I'm looking at getting this 659GL-70NP/C/T touchscreen for my Raspberry Pi but I'm not sure if the touch surface will work with the Raspberry Pi
Android OS. Will it?
I don't know if you can get this screen to work with the RPi, but on an older thread on Raspberry Pi site (2012AUG02), I found this message from Limor Fried on a suggestion to port Adafruit Arduino code to use in RPi touch screens.  I assume any code they use will using the Adafruit RPi distro. 
hang tight folks, we are working a lot of products for the pi, including a touchscreen!
You can read the post here.  I'm pretty sure this was also repeated on a RPi Friday video somewhere. I'll add a link when I find it.
 adafruit, "Touch-Screen-Library: Arduino library for 4-wire resistive touchscreens"
 adafruit, "tweaked distribution for teaching electronics using the Raspberry PI"
 adafruit reply to jfornango "Tue Sep 18, 2012 4:50 pm"
Not sure if the Raspberry Pi has networking support on the DVI port.
The HDMI 1.4 is supposed to support Ethernet on Pin 14 HEC Data-
(Optional, HDMI 1.4+ with Ethernet)
Not that that device has HDMI. Or even DSI.
I would pass on that and wait for the DSI activation. PSP I think uses DSI touch screens.
It depends on your OS. It should work, but your OS might not have the required drivers. If you're using raspbian I wouldn't, it doesn't have very good video drivers, but android or something else, give it a try, you may have to do some editing to