Hi Gord, yes it's possible to cut grooves, check out here for some previous discussion:
http://moi3d.com/forum/index.php?webtag=MOI&msg=3859.2
http://moi3d.com/forum/index.php?webtag=MOI&msg=4162.8
http://moi3d.com/forum/index.php?webtag=MOI&msg=1654.2

- Michael