how to open .ico file in photoshop cs5

Error Attempting To Open .ICO File In Photoshop:
If you attempted to open a .ICO or Windows Icon file in Photoshop before the ICO plugin is installed you will see an error similar to the below example image.

This just means that you do not yet have the Windows Icon plugin installed which we will complete in the below steps and then you will be able to open, edit, and save .ICO files.

 Step1:

Download Photoshop ICO Plugin:

First click here to download the correct version of the ICO (Windows Icon) File Format Plugin For

 your windows 32 bit or 64 bit in Photoshop
 
Go to Link

http://www.telegraphics.com.au/sw/product/ICOFormat

 and download

  Step2:
 
   Unzip the file in the path

C:\Program Files\Adobe Photoshop CS5 (64 Bit)\Plug-ins\File Formats

   Step3:

   Now start Photoshop and open a .ico file it will ask for

    Do u need it  original size or 256 * 256, 32bit/pixel

 
 Step4:

 Have a fun............