Okey-dokey...*rolling up theoretical sleeves*... my hubby is a cabinet maker/installer, and we have remodelled 2 kitchens together... THAt was loads of fun, let me tell you LOL.
First, do you want to save your present cabinets? Are you going to re-use them? Donate them to somewhere? Or are they going on the junk pile?
In any case, for upper cabinets, the first step will be to remove the doors. Open them, and look to the hinges. You should be able to find the screws within the hinges to remove the doors.
Next step, somewhere near the hinges there should be small screws that are holding each cabinet to its neighbor at the front face. Remove those. Now examine each cabinet top and bottom just to be sure you don't see any other random screws holding the cabinet to its neighbor... there shouldn't be any, but if the installer was having trouble getting it to stay level or flush he might have added them.
At this point, examine the back wall of the cabinet. You should be able to see the screws holding the cabinet to the wall. They may be covered with a small removable plug or a sticker to disguise them. When you take these screws out, have a couple of other people be holding the cabinet, it will be coming down and heavy.
For lower cabinets (those covered with countertop) the procedure is a wee bit trickier. The first thing you have to do is identify how your countertop is attached to the cabinets, and remove it. There are many ways for that to be done. Remove drawers and doors and look up underneath, you may be able to see how it is attached.
After removing countertops and doorfronts, you will proceed as above. The only other thing you will have to do is account for plumbing and wiring. The easiest way to do this is use a small electric saw and just cut the cabinet away from them and discard it. Lower cabinets are much more difficult to save and reuse, but it can be done if you are careful.
Taking out cabinets is not too difficult, and can usually be done in a day or two, especially if you have some friends to help with the lifting and carrying bits.
