New owner of an MC200. Having what I suspect is a network issue (admit I don't know much about networks. desktop is running XP, using DSL router to access internet) All was good for first week. Hardwired the MC200 to our router, used Config to find the IP address (xxx.xxx.xxx.45) of the MC200, entered that into our web browser (page opened fine), downloaded controlPC program, opened controlPC and started ripping our CD library. After a couple days of ripping, we disconnected the hardwired ethernet connection to our router, moved the MC200 downstairs to our Meridian system, fitted a wireless bridge to the MC200 for iPhone control, connected digital audio to our G61 and spent a day listening (sounds great). This morning, we brought the MC200 back up to our PC and attempted to run controlPC again to do more ripping. We get an error screen saying "The Web page is unavailable because you are offline" There is then a list of "What you can try:" including "click Tools" but there is no tools button to click. We can still use the web utility to display the files on the MC200 using the IP address we were using before disconnecting. So that didn't change. But running the config routine now, it shows the MC200 with the same IP address but the controlPC with a slightly different IP address: same initial numbers, but ending with .47 now. And looking at our DSL connection information on our desktop, today it is showing an IP address same as above but with the .47 at the end, not .45.
So I'm thinking that we have an IP configuration problem, but not sure how to repair. Assistance most appreciated.

Main: 861v8, 818v3, 8000XE, 7200HCUSE, 7200.2, Roon Nucleus+, Shunyata Everest w/ Sigma XC and Alpha NR's, HD621, Oppo 103D, Panasonic P60ZT60 plasma. RJ45 switch on master SpeakerLink lines to select 861 or 818, Etherregen & ENO AG feeding the 818, M-Links.
Room #2: 5200.2s from M218.