Since "codex-it-takes-two-part02-rar" refers to a specific part of a cracked game file (originally released by the scene group CODEX), a post for this would typically be found on a gaming forum, a repack site, or a file-sharing community. Here are a few options depending on where you are posting: Option 1: Informative/Technical (For a Forum or Blog)
If you are getting a "Checksum Error" or "Unexpected End of Archive" while extracting: codex-it-takes-two-part02-rar
Older versions sometimes fail to handle newer high-compression archives. a repack site