6. I have both computers showing in network
neigbourhood but I cannot access any files across the network?
In order to share files across the network
you will need to explicitly share them.
Firstly you will need to ensure that file (and printer sharing)
is enabled which is explained
as part of this page.
Next if you want to share all files then you can simply share
your entire C drive and all files will be accessable or if
it is just a common folder then you can just share this one.
In order to share them open the windows explorer and right-click
on the folder you want to share (or indeed the C drive itself).
From the popup menu choose sharing and then select shared
as and fill in an appropriate name. You can also choose what
type of access you wish to grant to the files from the same
dialog. Click OK and the folder will become shared and a Blue
hand will appear underneath it in the explorer to indicate
that it is shared.