The way a pro would do this is with something called a "toe kick saw",
like this one:
'Crain 775 Toe-Kick Saw | Tools4Flooring.com'
Or, just Google "Toe kick saw" and read all about them.
You can rent a toe kick saw from Home Depot, but if they don't have
them, phone up any retail carpet or flooring store and ask to speak to
the Installations Manager. Ask him who sells flooring installation
supplies in your area, and whether they rent toe kick saws. Most
likely, the places that sell flooring installation supplies will rent
toe kick saws.
A toe kick saw will cut to a maximum depth of 3/4 inch approximately 1/8
inch away from your cabinets, so that you don't actually disturb the
wood flooring the cabinets are sitting on.