http://www.apache.org/
Download appche

http://www.dyndns.com/
If a home server, use this to link your ip address.

Make sure your router is letting your appache through, default port 80
- also make sure your confige file for appache contains the port you wish to use.

As far as gaming... your connect will probley be slow if hosted at your home... i have an 8 meg connection and my webpage runs slow sometimes.

these are some common pitfalls, good luck