Vector XT question

Hey all,
Downloaded the demo for XT and love it :) But I have a question. I
open up a 2d .dxf (basically a line drawing of a logo I'm working
on). I click on one of the lines and hit the select chain button.
Then the line turns red with little arrows showing which way each of
the segments is "facing". Most of the segments are facing the right
way (counterclockwise, to feed the part to my clockwise rotating
cutter) but some of them aren't. Of course, reversing direction of
the selection reverses all of the segments, not just the wrong ones.
How can I select a chain, and then choose a direction for the whole
chain? Thanks all :)
Thomas