Remove the molding or baseboards from the perimeter of the room. Pry them away from the wall gently using the claw end of a hammer. Remove the nails from the molding and set it aside for reuse. Dispose of the molding if you plan to replace it to match the new flooring.
Level the subfloor. Use a leveling compound to smooth out the surface so that there is no more than a 1/16 inch slope over every 40 inches of floor area. You can also use a grinder to remove bumps or high spots, or sand them away with sandpaper if the subfloor is made of wood.
Install the moisture barrier from your Harmonics installation kit. The material should be installed in parallel rows, and should not overlap. Allow the ends of the moisture barrier to extend up the walls by one inch. Tape the seams to hold the material in place, but do not fasten it to the subfloor.
Cut off the tongue connector along one side of a single piece of laminate. Place this cut side against the wall, and use the spacers from your installation kit to create an expansion gap between the laminate and the wall. The spacer should be place between the moisture barrier and the laminate, forcing the moisture barrier tight to the wall. Repeat this process to complete the entire first row of flooring.
Hold your next row of flooring at at 30 degree angle to the first. Align the tongue and groove connectors and snap them together until the two boards are lying flat. Stagger the joints along each row so that they are at least six inches apart. This helps to create a more stable floor surface. Repeat this process as you work your way across the floor.
Cut boards as needed using a saw. Keep the board face up when using a hand or table saw, or place the board face down for any other type of saw. This will help to protect the finish.
Place the last row of flooring into place without connecting it to the previous row. Wrap your pry bar around the edge of the board and use a hammer to force the tongue and groove connectors into those of the adjacent board. Be sure to use spacers along this final row as you did on the first.
Remove spacers and reinstall molding or trim. Nail the molding to the wall, not to the Harmonics laminate. This will cover the expansion gaps and complete the project.