Hani,
If you connect using an 'admin' connection in ArcMap/ArcCatalog you will only see the map service. If you connect using a 'user' connection you will see both the feature service and map service.
Take a look at the 3 links at the top of this page for more info: http://resources.arcgis.com/en/help/main/10.1/index.html#//006600000450000000
Russell,
Thank you very much, I tried it and it worked fine .