Aligning Vertices

Im trying to align a bunch of points\vertices in a single axis to make a perfectly flat plane, in lightwave you simply select the points go to detail\set value and choose an axis, distance from axis and its done. Is there any way in Maya of achieving the same thing? I have tried snapping to grid with little success... although the points seem to come close there are always some that seem to stray from where i want them to be. Thanks if you can help me with this

Open the move options and unchek retain spacing!

thank you works like a dream