How do I set my Galaxy Tab 2 7" to not search for "other" shared wifi devices in the Gallery? It sometimes shows a picture album from the files on my PC it also shows another PC in the house (my sisters) but hasn't "shown" any files from there.. if I can see mine can anyone else with a same wifi connected Tablet..my sister has a Galaxy.. can she see my files on the tablet?..I did not see a place where I can "turn off share on the Gallery"...