Bruce: I would suggest trying the "Castle Garden" site first at http://www.castlegarden.org/

Or, the Galveston Immigration database at
http://www.tsm-elissa.org/immigration-main.htm

Or, the New Orleans Immigration index of databases at
http://home.att.net/~wee-monster/neworleans.html

Passenger lists can be searched at the Immigrants Ships Transcribers Guild at
http://www.immigrantships.net/

As well, the ShipsList Passengers at
http://www.theshipslist.com/index.html

Good luck,
Pat