Hi Nancy,
I think that the kyrkoräkenskaper records are church accounts. Cradled in Sweden says:
Parish Accounts (Kyrkoräkenskapsbok)
When available the parish accounts usually go back to the 1600s. They may contain detailed accounts of those who paid for the opening of a grave indicating a death, or who paid the bride's money or gave a special donation at a christening. The donors were usually very close relatives and thus these accounts may supplement some missing parish registers.
You didn't mention what parish you are researching but if you have completely mined the available parish records, then perhaps you could look at the bouppteckningar (probate records), but you need the name of the härad (judicial district). The härad for each parish is listed in Cradled in Sweden and other sources.
Read this interesting article on how the bouppteckningar were helpful to a researcher.
http://www.genealogi.se/roots/bou.htm Other types of records are listed in the green section of the Swedish Roots site.
http://www.genealogi.se/roots/ Judy