You may be able to start pulling it up by removing the molding under the kick space of the cabinet. Iffy but worth a try.
Otherwise , as 84Fiero123 said.
If you look at the interlocking joint, You can see that either the top surface is longer or the bottom is. It lays in the direction of the long bottom. That is to the right in the bottom photo.
Like so....

The piece to the right has to go in at an angle and presses down to lock. when laying this type floor you get into situations where you can't get the angle, due to an obstruction. as in the case of the kick space under the cabinet.
To get around this you need a small hand plane to remove most of the marked portion shown belowin green.
It will still lock. I use a flat bar inserting it between the kick plate and the cut edge of the flooring and press sideways.

[This message has been edited by Wolfhound (edited 10-26-2011).]