Migrating ArcGIS WMS and server settings
Upon migration between computers, you can simply move your WMS and servers settings. Files are located:
windows xp: c:\Documents and Settings\[user name]\Application Data\ESRI\Desktop10.1\ArcCatalog
windows 7: C:\Users\[user name]\AppData\Roaming\ESRI\Desktop10.1\ArcCatalog
every connection is stored as a file: .ags, .odc, and .wms, copy and paste on the new computer and run ArcGIS.
ApplicationData is a Hidden folder