The checkboxes should tick if the value in the field matches that of the value list the field is attached to. So if your Value List had the two values "1" & "0" then those should tick.
If you want other values in the Value List then you will need to perform a replace on the field after importing to change the value of the ones and zeroes to the values you want for your checkboxes, so your replace may look like this:
field = 0 ; "NEW VALUE 0"
field = 1 ; "NEW VALUE 1"
You could build this as part of a script to speed it up for you.
I hope this helps