|In windows add the closest router to the PC's IP as the gateway then click on advanced and add the other router's (the one that connects to the internet) to the next gateway.|
Just as an FYI, if you set the two router's up correctly, this isn't necessary as a default route from the LAN on the downstream router (#2) to the upstream (#1) is added automatically and the traffic flow is automatically routed where it needs to go.
It may be necessary, depending on the make/model of the SOHO routers you're using, to manually add a route.
Also, if your DHCP on each router is configured correctly, clients connecting to the respective routes don't need any additional manual settings as they'll get the correct ones from the DHCP service.
I suspect you've got something not quite configured correctly and that's why you're having to do extra steps to make it work.
If you click on my name above in either of my responses and then read my "how-to" guide on "Adding a second router" you can see a basic setup guide. Since you're using separate subnets, you'll want to pay attention to the "LAN to WAN" scenario.
It matters not how straight the gate,
How charged with punishments the scroll,
I am the master of my fate;
I am the captain of my soul.