Your question is incredibly difficult to understand. Perhaps posting a diagram of what you want to do will help us understand you.
So you have 2 separate routers and 1 PC? One of those routers is running WEP and the other running WPA?
What is the purpose of this arrangement? Is there another network behind the second router, or is it a bridge or???
I have wireless card that dont support WPA so i want that to both routers working on same network