Hmm.. With the newer versions of Solarwinds Netflow its not quite as simple as he said, they really want a separate server for the Netflow data for its new custom database format. They have quite a few good install guides for that though. Plus, the default port for Netflow isn't really 6343, although that is the default port for sFlow, a Netflow variant. There is also IPFIX which uses port 4739 by default. These days most Netflow products tend to use UDP port 2055, in the past 9995 was the default. I would say 2055 is by far the most popular these days though.
If you want to configure Cisco products to do Netflow, use Solarwinds free tool until you get used to doing it yourself!