Obviously editing a post doesn't mark a thread as updated, so maybe that's why suddenly no one posted anymore. So, here's a NEW POST!!
My posters at full resolution of 60 x 80 cm at 200dpi (I guess it's enough for a poster):
The Secret of Monkey Island
Monkey Island 2: LeChuck's Revenge
The MI2-artwork is slightly cropped on the sides, to match the 3:4-ratio I wanted for the posters.
By the way, here are both "before and after"-comparisons: