Can I deploy a configuration file along with a dll to the gac?

I am deploying a web service dll to the gac and everything works fine. When I change the dll to use values from a config file (x.dll.config) and deploying the dll to the gac, it doesn't know where to take the values from since only the dll is deployed to the gac (using gacutil). Is there any solution for this? A global web config file I can add the values to, which the dll will know to go to?