Dafina,
> I am a member of a small group using PostgreSQL has a data backend and I
> writing to request and MD5 checksum for PostgreSQL 8.7.3.
> If an MD5 is not available, I would appreciate the location of an RPM
> for 8.7.3, if there is one available.
> Thank you very much for your assistance in this matter.
Um, there's no such thing as PostgreSQL 8.7.3. The latest stable
version is *8.3.7*. Was that the version you meant?
If that's the case, then everything you want is here:
http://www.postgresql.org/download/linux
http://www.postgresql.org/ftp/source/v8.3.7/
--Josh Berkus