We want to share the expense and he has a third-party router. He has the internet connection and I suppose I could set my time capsule in his apartment. However I want my time capsule (airport extreme) in my own apartment as I need to use this for wireless printing etc. I need my express where my stereo is, so what to do!? Thus todays question is: Can I extend a third party network using my timecapsule and aiport extreme? Please anybody?