Setting Up A Large Home Network?

Im trying to rebuilt my parents home network. This is the general layout of what Im trying to go for when everyting is said and done.

modem---router1----switch1----router2---switch2
l l l l l l l l l l l l-direct-tv box
l l l l l l l l l l l-blu-ray player
l l l l l l l l l l-xbox 360
l l l l l l l l l

[code]....

and i dont know what switch 2 is yet because my dad ordered it and it has come it yet, all i know is its a linksys Now the big problem I keep having is keeping everything up and running for more than a day. Ive already configured router 2 to a staic ip address of 192.168.1.151 and disabled DHSP server thing which cleared up some of the inital issues I was having. But I continue to be plagued with issues of computers saying there are duplicate names on the network and the internet only working on some devices most of the time and the internet going out completely after a day or two. Now when the internet only goes out for some devices its usually limited to everything thats not hooked directly into router 1.but everything hooked directly into router 1 still has internetand the basic hard restart of everything does nothing to solve the problem. The only real way Ive been able to solve things on a large scale for a short time frame is to unhook everything and setup reouter 1 and the computers that hook into it on day one. come back on day two and setup switch one and comback the next day and so on and so forth. and usually by day 5 everything has worked for about a day or two then Im back with nothing working.