While the n810 is harder to disassemble than the n800, it is relatively easy to get access to the n810's screen. The hard part is finding all of the screws that need to be removed...
Going by memory... (I assume that if you do a search, that there is probably a video or step-by-step of someone taking a n810 apart)
You will need a torx screwdriver (T6 I think).
I think that I remember two connectors for the screen; a large one and a smaller one -- the connectors are just thin plastic ribbon cables.
You there isn't much clearance, so if you don't have small fingers, you might need something to slide under the screen to press the connectors down.
I'll see if anything else pops into my head before I get home tonight...