There are helpful people, including Swedes, on the Sweden forum. Type Sweden into the "Jump to Forum" space at the top of this page. Ask questions which this forum can't find on the trees and they can probably help you. They certainly can read the records.
Scanned Swedish parish record books are online, for a fee, on the following fee-based subscription sites.
http://www.genline.comhttp://www.genline.com (and also on the world version of Ancestry.com, which now owns Genline)
There are some Swedish researchers who have put their information about at least some of these people on the fee-based DISBYT site. (Actually, they submitted their GEDCOMS and the site shows part of their information. If you contacted them, you could then correspond with living relatives.) Contact information can be seen if you are a member (about $22 a year, give or take a dollar or two) and if you submit your own GEDCOM file, then you get a different password and you can see the individuals in family groupings. This is an excellent site for finding relatives in Sweden.