Please see MOS note: (includes link for older version)
Available Versions, Patches, and Updates for Download for Oracle iPlanet Web Server (Doc ID 1326069.1).
However I strongly recommend against installing ancient versions of the Web Server software. 7.0.8 is no longer on premier support. The earlist
version that is Oracle branded is 7.0.9. I would only deploy something much more recent than this.