I read all your ideas carefully, and spent days checking stuff online, like routers, wireless access points and the like.
as I'm not too sure the wireless internet thing will work well enough here -- as this is an old house with very thick walls and I'm two floors above the office -- I'm now going for a router (which gets the DSL modem cable as input and has 5 LAN ports for output) and connecting both office computer and my notebook physically with LAN cables to the router. Order is sent, wasn't too much money spent after all. Here's to hope my limited understanding of your shared knowledge will lead to a positive ending in this mystery of online connection


