You need a converter or adaptor. I assume your keeping this a SS so you just need a BNX converter and crank.
This is the easy way,
Amazon.com : Pyramid M x 3 Piece Bottom Bracket Set Conversion Kit : Bottom Bike Brackets And Accessories : Sports & Outdoors
This is the better way since you can use a better quality BB and have a bigger selection of cranks.
http://www.amazon.com/Aluminum-Botto...bottom+bracket
__________________
“One morning you wake up, the girl is gone, the bikes are gone, all that's left behind is a pair of old tires and a tube of tubular glue, all squeezed out"
Sugar "Kane" Kowalczyk