Maxine,
You mentioned Daysland. I assume you must mean Dalsland province. Many people from Dalsland emigrated through a Norwegian port, as
Anette suggested.
Information on where the emigrants landed in the United States and which ships they used to arrive in the U.S. would not be available from Sweden. (They did not follow the movements of the Swedish emigrants after they left the country.)The best you could hope for would be the källkod from an Emigrant CD lookup, which could be used to learn about the trip to England, where they got on a larger ship for the rest of the journey. (Apparently your relatives have not been found on the CD. You might need to find out more information to aid in the search. I had to dig deeply in my research before some of my relatives were found. Some were never found on CD Emigranten, but I learned their parish in Sweden by lookups on their siblings.) That information can be found, if you are lucky, by spending many hours squinting at diffcult to read microfilms of the passenger arrival records.I have spent many hours on several research trips trying to find my relatives on passenger lists and I have only found a few so far. Passenger lists at that period of time didn't give specific information about where our emigrants lived in Sweden. You will just find they came from Sweden.Your time would be better spent checking Swedish-American church records.They are not online but the Swenson Center has them and much, much more.That is where I learned the parish for most of my ancestors. (The records were kept in the parish.)
http://www.augustana.edu/administration/SWENSON/index.htm There are some online ship lists and there is also a very nice list called The Ships' List. I suggest joining it. They might have some useful information on how to find the name of the ship(s) used by your ancestors.
Check the SweGGate website.
http://www.sweggate.com Follow this path.
Themes --> Emigration --> Sources --> Travel
This path tells about a typical journey.
Themes --> Emigration --> Guides --> Travel: A Typical Journey
Good luck!
Judy