1 NIC, 2 IPs - how to define src ip for communication

Hi All,

I have a seemingly simply question but I'm not sure if I
can do it in Windows.

I have a system that has a NIC with 2 IPs assigned to it
(IP1, IP2).

I have another system that I must communicate with it
using IP2.

IP1 is the "default" ip for that interface. ie... if you
do a route print (or netstat -arn), this is the IP that
appears under the interface column

I thought I could add a static route to the another system
and define the interface/ip that it goes out of,but it
still defaults to IP1.

I am to do this in Linux using subinterfaces, but I
haven't found a similiar solution with Windows.

I know that I could another NIC to the system, but that is
not possible with this system in question.

Thanks in advance.