extracting iso?

i downloaded a game and i’m trying to extract it and it says i need the .r00 file and it didnt have one with it. it wont extract further without the .r00. http://www.google.com?t=505258&highlight=
what do i do? i’m suprised nobody else that downloaded had this problem
Answer #1
Use WinRAR(windows user) or StuffiT(Mac user) and just double click on the *.part1.rar file (and have the other part*.rar files in same folder) and it will extract itself there.
Answer #2
yeah i keep trying that and half way through it gives this