Well, I found this:

http://www.accessorylink.co.uk/produ...ID=3479&CtgID=

For the search, I put Nokia N800 and the part number 4850991 in Google. The I found that Accessory Link was a good place to buy from many references from a N95 users forum.

I already ordered one, and it just got shipped, but it is going to take some time to arrive, so I can't assure you if it is a good quality screen or no. But people that order N95 spare parts from that place say it is trust worthy.