The problem with switches is they do not automatically assign you an IP address needed for each computer to work properly, so that each has its own identity when accessing the web. Both are trying to occupy the same IP address at the same time causing an IP conflict.
You are better off getting a router which assigns each computer its on host IP address from a list of available IPs, from its LAN TCP/IP list, which starts off with a basic IP like 192.168.1.1 and assigns each computer a subnet of 192.168.1.2------ 192.168.1.3 ect.
Then it is devided up into packets and sent out onto the initiual IP address assigned by your ISP.
By setting the router up with DHCP the IP numbers are automatically leased as needed for each computer and there is no need for user configuration each time a connection is attempted by one or both of the computers at the same time.
Edited by MrBruce1959, 10 April 2010 - 11:10 PM.