remote access

I'm trying to understand what exactly the network wizard does rather than
just blindly running this feature. The factors involved in a LAN that I'm
aware of a
1)placing computers on same workgroup
2)enabling file & print sharing for microsoft networks (properties of
network adapter)
3)setting up computers to automatically obtain IP & DNS addresses
4)sharing whatever folders I desire to be shared
5)allowing remote assistance (only if desired)

When I go to share a folder on a computer for the first time a properties
window appears saying that windows has disabled remote access to this
computer for security purposes. If I wish to enable it I can run the network
setup wizard.
What would the wizard do to enable sharing that I haven't already done?
Where would I navigate to find these features to enable sharing?