Help: System requirements for postgresql 7.4.1 - Mailing list pgsql-admin

Hello, I'm evaluating that version and I can't find system requirements for it. Could anybody please help me with these
questions?

1.1. Hardware:
1.1.1. C.P.U. (how many processors, what speed)
1.1.2. Ram. (minimum and desired)
1.1.3. Disk.
1.1.4. Networking.
1.1.5. Scalability

1.2. Software:
1.2.1. OS. (wich versions and patches are required for linux and solaris)
1.2.2. Required software packages.

Thank you very much.

Best regards,

JCD.