Rather than upgrade to a MacBook now since MSOffice 2011 is not ready for the Mac, I went ahead and changed out the router with an Net Gear.  Do I have to do anything on my mobileme© account so the syncing will work?

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You should not have to do anything at all to your mobileme account as the router is an independent from content you get from the web.  Once your computers and devices are back online, regardless of what router they are using to connect to the internet, your mobileme services will continue to sync in the background.