I am looking to set up a simple wireless network with 4 computers. It is a completely internal self-contained network where all we need is file and print sharing. No DSL or broadband access is required and ther will be no wired devices. I was looking at the Linksys product line expecting to find wireless hubs/switches. However, all I find is wireless broadband routers and access points. I do see there is something called ad-hoc mode that allows all wireless PCs to communicate with one another without a router or access point. I am wondering if this is the best way to go considering my requirements or should I spring for a router even though I do not need all that functionality? Also, can a wireless access point act as a hub or is this device just for connecting to a wired network? Also, any thoughts on USB wireless nics versus PCI? I have heard USB is better since it can be positioned easier in the event there is a signal strength issue.