[amcd]

1. What Operating System to install on the Web (PE1950)& DB (PE2950) Server

I am using freeBSD. Others use various distributions of Linux. Any stable Unix/Linux should be good. People are also using windows servers successfully, but I would advice against it. For the DB server, you may want to avoid BSD and stick to Linux, as many experts advice this, but I am using FreeBSD without any problems.

2. What other services are needed on each servers.

Mail, DNS, ftp, ntp.

3. Any iptables configuration requirements?

For vbulletin - no. But you may (should) install a firewall for security.

4. Specific version of apache, mysql and any other server software components.

Litespeed and LightTPD are reported to give better results than apache for busy vbulletin sites. Any stable version should be good.

If you were previously using MySQL 4.x, then beware before moving to MySQL 5.x - you cannot come back to 4.x. Take the latest release version of whichever branch you choose.

5. Whether or not Webmin is required.

No. You may need it if you do not have the confidence to do things without a control panel, but vbulletin does not need webmin or any other.