This is how to use Reicast. Go to Google  find & download DC bios. Download 7zipper & extract the DC bios it will make a folder called dc. When you go back to reicast go to paths  make the first browse thing go to the dc folder and set it to the data file. Then all you need is games. When you have games use 7zipper to Extract the rom  then extract the 1st extracted file Bam!! Hope I helped out for those confused. Have fun & enjoy
October 23 2016