Dimension 2400, windows xp home.

Two things

Trying to setup a network with another computer and both show the same error message."A network cable is unplugged".I cannot seem to get the to talk to one another Any ideas

The second is trying to connect a Panasonic DMC FX9 camera via its usb cable. The following error message occurs "Files C\download\driver\14209 is required insert your windows disk.

As this is an OEM disk there is on the label that it should only be used for reinstallation.The panasonic help line only refers me to consult the maker

Any advice thankfully recieved