Ok, so granted this could have been answered in other threads, but the reason I want to buy a Tablet is because the lack of time. So please bear with me and please answer me the following questions

So I want to buy a PDA, and the N810 looks just great for what I need. But I want to know the following:

- Can I use and create Windows Office documents? .doc, .xls, and such? is there any freely available third party app to make this possible?
- speaking of which, can I use Macros from Excel on this tablet? Or any other app written in VisualBasic?
- Is the movie streaming perfect, as it should be? I mean the avi's encoded with Xvid and such. Do the 3rd party apps offered on this site ensure the great performance I would expect? And since the screen resolution is 800x480 (!) can it run smoothly movies on a 750x400 resolution?

- Since this is out of store for my country, I am considering buying it from Ebay, new and in sealed box. Are there any signs of originality I should be looking for? How do I verify it?

Thanks for your time. Your answers might bring this community a new member. Cheers.