The brightness really depends on the projected image size. Smaller projections are easily visible in a well lit room (think of using a laserpointer in a bright room, easy to see even from far away.) The larger the image size, the darker the room needs to be.
Not feet - inches, stupid. Honestly. 12 to 100 inches...only 1 to 8 feet.
Let the hive mind of Engadget get that for you.
"My father-in-law is heading back to school in the spring and wants a laptop for Christmas. The only catch is their budget is around $400 and he does not want a netbook. He's not very "tech savvy" at all and doesn't need a hoss of a machine (not that $400 could get you one). We would like to get it for him as soon as possible and would love some input."
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