From XP Help:
To configure TCP/IP for static addressing
Open Network Connections.
Right-click the network connection you want to configure, and then click Properties.
On the General tab (for a local area connection) or the Networking tab (all other connections), click Internet Protocol (TCP/IP), and then click Properties.
Click Use the following IP address, and do one of the following:
For a local area connection, in IP address, Subnet mask, and Default gateway, type the IP address, subnet mask, and default gateway addresses.
For all other connections, in IP address, type the IP address.
Click Use the following DNS server addresses.
In Preferred DNS server and Alternate DNS server, type the primary and secondary DNS server addresses.
To configure advanced static address settings for a local area connection, click Advanced, and do one or more of the following:
To configure additional IP addresses:
On the IP Settings tab, in IP addresses, click Add.
In TCP/IP Address, type an IP address in IP address and a subnet mask in Subnet mask, and then click Add.
Repeat steps 1 and 2 for each IP address you want to add, and then click OK.
To configure additional default gateways:
On the IP Settings tab, in Default gateways, click Add.
In TCP/IP Gateway Address, type the IP address of the default gateway in Gateway. To manually configure a default metric, clear the Automatic metric check box and type a metric in Metric.
Repeat steps 1 through 3 for each default gateway you want to add, and then click OK.
To configure a custom metric for this connection, on the IP Settings tab, clear the Automatic metric check box, and then type a metric value in Interface metric.
To open Network Connections, click Start, point to Settings, click Control Panel, and then double-click Network Connections.
You must be logged on to this computer as an administrator to complete this procedure.
I have 2 PCs on a Linksys wired ethernet. Both PCs are getting their IPs from DHCP. I want to know how to keep the IPs from changing each time I reboot. I think there is a place where you can set it in Windows. Both PCs have XP Pro.