I think they should go with an unknown mid-to-late twenties actress for the part of Lisbeth in the remake. All the ones that have been mentioned look too young to play the part convincingly (Emily Browning in particular looks about 15 and too cute to play a jaded computer hacker...). I actually like Kristen Stewart in most films apart from Twilight (she really just seems to be doing those films for the industry exposure and paycheck imo), but she'd be totally wrong for Lisbeth.