Need help configuring routing

I have a Windows laptop and a Sparc desktop. I'm trying to toy around with routing.

If have always on broadband from BT. My router ipaddress is:

192.168.1.1

This router uses DHCP.

My Laptop Ip is as follows:
Ethernet adapter Local Area Connection:

    Connection-specific DNS Suffix  . : home
    IP Address. . . . . . . . . . . . : 192.168.1.3
    Subnet Mask . . . . . . . . . . . : 255.255.255.0
    Default Gateway . . . . . . . . . : 192.168.1.1

I don't want to use DHCP on my Sparc desktop and I have plumbed the interface as follows:

interface bge0:
IP address: 10.0.0.2
Netmask 255.255.255.0

I want to add a route in the router's routing table to enable me to ping or telnet from my windows laptop to my sparc desktop. I can't seem to get
the netmask or gateway correct.

The router asks for the following:

Add New Static Route

Destination 	\(For default route, type 0.0.0.0 or leave blank\) 	
IP Address: 		
Netmask: 		
	
Forward packets to 	  	
Gateway IP address: 

How do I achieve adding this route?

Thanks in advance.

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