Does anyone know of (or could anyone code) a small program that would reduce the number of icons in my system tray - I have seen a pay-for one (can't remember title), but wonder if there is a free one.  I know Windows does this natively, but I would love to be able to just select which icons would always be hidden, and show them again with a mouseclick.  Anybody know?

I feel a fool, but a happy one! Following Mouser's advice, I tinkered a little more with the firewall before giving up, and now it seems to be working! I'm not sure about security aspects of this, so can anyone advise? I'm running Kerio Personal 4, and I noticed that under Applications/Network Security, MS File and Printer Sharing was denied for the trusted zone, so I permitted that - but that wasn't enough, so I then permitted Generic Host Processes and Any Other Application - is this network suicide? What does and doesn't need to be permitted? 

Thanks, Mouser: I touch my proud head to your feet!

Oh yes, many times!  I now have them printing to the i.p. address/printer, rather than to the computer name/printer - not sure if that ought to make any difference, but it seems a little more reliable somehow...