Hello Kloppstock, I've managed to work my way through ( I don't usually speak swedish! ).

I think the problem might be when you re-installed your OS, try enabling your NetBios over tcp/ip.

You can enable NetBT for computers running Windows XP by opening Network Connections, right-clicking a connection, clicking the Internet Protocol (TCP/IP) component, clicking Properties, clicking Advanced, clicking the WINS tab, and clicking the appropriate option in NetBIOS setting.

hälsningar

Martin