iso problem for ps2 game for ps3

hi,nebie here , i just downloaded a game from ps2 section thinking i was getting a ISO, but it came wih several separate folders, want to send to my my cfw ps3 using multiman, bit lost now.
please help.
ta

do the files end like "filename.r01" "filename.r02" etc ?
is yes , then you have to use an extraction tool like WinRAR. After installing Winrar just double click any of the file and you will be able to extract the .iso .