That depends on whether or not you have already layed the objects on the form.
If you have, you can 'lasso' the objects and select the Layout tool to align the objects horizontally (left or right). However, I am unaware of a way to align objects vertically with no gaps. You can use the arrow keys and your visually acuity to align the objects with no vertical gaps or you can use object Layout property sheet to set the X and Y coordinates of each object.
If you are just laying out the form, consider using Edit > Copy Multiple on the tool bar. Place the first object on the form, highlight or select the object, and go to Edit > Copy Multiple to replicate the object vertically (vertical spacing set to 'touching').
Steve