Hi Blanche, Sorry for the delay, could not see you with all the John 2000's around. Lets start in the bedroom, items you will require are plasterboard ( I think you call it drywall??) is 1/2" thick and 2ft wide and as long as you like, and 3"x2" plained lumber (nice word that)now lets say from the floor to the ceiling is "X", find the center of wall (left/right)the center is important, screw a 3x2 at the center, the 2" side to the wall dont forget the wall plugs, make sure it is upright with a level. The 3x2 should be 5" shorter that the X, fix the 3x2 leaving 2"1/2" from the bottom and top, do the same at both end of the wall ie: in the corners, so now you have three timbers, one on the left one on the right and one in the center... Now fix a rail (3x2) long the bottom ( take off the plinth first), the run a rail along the top screwing as you go,. From the center rail, find the center, mark it with a pencel line top to bottom. from that line go 2'(24") to the left fix a rail ( hart to hart) do the same on the right till you run out of wall."you should have at the ends a smaller space (less than 2ft)it's good, if you have a larger space then fix a rail, at 2" By now you should have a frame fixed on the wall, standing out 3". If you have electric wall plugs (GET A ELECTRICAN TO REFIX THEM) My motto is "if you cant see it then dont go near it". The timbers of 3x2 at 2ft centers are important, they will be where the panels fit together, thats why they should be 24" hart to hart. Next. in between these rails you will have to fix more 3x2 at the 12"centers they are to stop the panels from bending in. In between the rails you place the insulation, Fibreglass/Rockwool. the insulation should be 3"thick, if you can only get it at 4"thick then no problem,if you use the white polystrine, its ideal for cold but not for sound, push it in tight and make sure you have no spaces (sound will come through),. Before you start to fix the plasterboard go to the center rail and messure from the hart and see how it comes at the end by the wall, if not good then start (from the hart again) 12"and then 2ft and see how it comes at the end by the wall.you can move it to suit your self. screw the panels where they come together about 8" apart, then do the same with the centers of the panels ( trick- put some bits of tape on the floor where your rails are, do the same on the ceiling or just a little pencel mark will do,thats so you can find the rails later to screw to. Fill in the joints and sand smooth paint or paper dont forget to put back the plinth. If you have problems, you have my e-mail. Have fun.. John 2000.