Sort of, but the display would look a bit different. Rather than using one list box with spaces to separate the two items per line, you could use two listboxes instead. This will create a small line between the two lists (it could be made as small as one pixel) or you could have the two lists overlap a little bit (again 1 pixel would be the minimum).
Without using an external dll, which is what you requested, this is the best that I can think of.
