Joined: 09 Dec 2005
First of all: I completed this scene on my N900, so it's possible.
I managed this scene using a "swipe" technique I have menioned in a different post. Try the following:
I in the inventory box, put the stylus on the item (e.g. hammer) and without releasing it, drag the item to the border, out of the inventory box. After the box has closed, release the stylus. The item should have followed the cursor and no additional click should have happened. Just click the point (e.g. bed) where you want to use the item.
EDIT: Just finished COMI and noticed that the exact procedure is: Select an item in the inventory box by clicking (and releasing sytlus) -- the cursor changes to item -- then do the drag and drop procedure above.