SUE we've put in 2500 sq ft of laminate here and underneath most floors is concrete........use the green foam underlayment
you do NOT need a laminate cutter..SUE PM me ok? then i can have DAVE explain it to your hubby. WE have done 3 bedrooms, hallway, living room, dining room and kitchen so far with pergo laminate floors
preparing floor is hardest part......installing takes few hours tops!
also you have to roll out underlayment, do NOT make it too tight, and keep a vacuum handy to make sure floor is clean as you lay them down.
email me and we'll get ya going!!
OH I have Pergo Accolade now in her for 2years
we LOVE IT and soooooooo easy to keep clean and doesn't scratch easily either
NOTE: this is great over concrete!!