Just thought I'd post the relevant here:

Two options:

Helsingborg-Helsingor Ferry
departures every 20min from 06:00-23:00
Price 275SEK, 225DDK

Oresundsbron Crossing
fare paid in either direction at toll gates on Swedish side
Price 275SEK, 225DKK
Credit cards accepted in marked lanes
All cards except American Express charged in DKK
American Express charged in SEK
Roundtrip Pass is avail for 450DDK or 550SEK respectively, no discount scheme avail for less that four trips.  

Hope that helps.  Feel free to post additional info about the region- favorite places, beaches, good photo spots, etc.