I'm so relieved... I thought I would need a new crankset, but the width definitely explains it now that I compare the cog and the chainring.
I saw a similar problem through a search a minute before I read the response. I'll be getting a new chain tomorrow, so hopefully I'll be out and riding again!
There should really be a sticky with all the potential problems with converting a bike.
Thanks for the help. I can barely contain my excitement now that I know it should work.