I'm wondering whether I can run JLANserver (this is Alfresco, isn't it?) coexisting with Windows 7 Server service. Otherwise, how would I be able to run existing Windows shares?
Yes. It can be a pain and Windows 7 is not a supported Server (It is not a server OS at all really) but it works. The trick is to use NETBIOS to look up to a separate share name. In alfresco by default there will be a share name with ${hostname}A