To find the Interspread ISP folder

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            Quick option.                 
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WINDOWS VISTA & WINDOWS 7
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Goto to start menu and then search box
type  C:\ProgramData\ISP 
and hit enter button


WINDOWS 2000 & WINDOWS XP
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Goto Start menu and then run box
type "C:\Documents and Settings\All Users\Application Data\ISP"    including the quotes
and hit enter button


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  To unhide folders permanently.
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WINDOWS VISTA & WINDOWS 7
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1.
 Open Folder Options by clicking the Start button Picture of the Start button, 
 clicking Control Panel, 
 clicking Appearance and Personalization,
 clicking Folder Options.


 2. Goto View tab 
 
        A) Select (dot) Show hidden files, folders, and drives.
        B) Click on the Apply button.

3. Click on OK. 
    
    

WINDOWS 2000 & WINDOWS XP
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1. Click on My Computer from your desktop and from the menu click on Tools and then Folder Options.
    
2. Click on the View tab and under the Hidden Files and Folders section, choose the radio button that says “Do not show hidden files and folders”.
    
3. Click OK to save the changes. Usually this option is already set by default to hide files and folders, but it’s good to check anyway just to make sure.