My mill was delivered already assembled on the cabinet stand ... which presented a problem. The cabinet is none too sturdy, and positions the mill too low for me, so a forklift was used to lift the mill off the stand. A 2x2 angle frame was cut & welded on both the top of the stand and the bottom, then a 2x2 square tube riser was welded on top of the frame ... will try to post photos later if you're interested. Lifted the mill back onto the stand and bolted it in place, then moved it into position in the shop.
Still too low
Framed out a base, fabbed four huge feet out of 6" diameter pipe resting on mine belting, and convinced two of my best (as in strongest) friends to help lift everything up onto the feet. The point being, try to determine the height you want the mill table to be - don't forget to add for the vise, and for a swivel base if you plan to use one. Do all the add ons before setting the machine in place, as it is one heavy piece.
A crane of some type is helpful.