You can select to view your folders in the way you desire by making the following actions: Go to "My Computer", select, for example, "C:", where you will see your files displayed, probably in your case, as you state, in the "large icon" view. You can change to "Detail" or "List" just for the current time and folder by clicking on "View", then select how you want to see that folder. If you want to make a global change, so you will see all of your folders at anytime in the same view, do the above step to get that folder to show the way you like (I prefer "List"), then check "Tools", then "Folder Options", then "View", then check "Apply to all folders". Afterwards, all of your views will remain as you selected it above until you change it again.
is there' any way to select that files and folders in My Computer will be viewed in other than "Large Icons" selection (rather in "Detail").
everytime I open My Computer, it always defaults to "Large Icons" selection.

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