Hi, if you use the installation CD provided by Sky it has an excellent animation for showing non-techies which wires go where.
If you have a look
in this post you can get an idea of timescales. At the moment I am the last poster there, so you can see how long it took me to get mine.
I'm not familiar with the netgear hub you mention, but the Sky router has 4 ports on it which may be sufficient for your needs.