what is the simplest and easy way of cropping a picture in windows 7 ??
cropping a pic
Download IrfanView. Its free and small in size. Must have tool IMO. Download link:
*www.irfanview.com/main_download_engl.htm
*www.irfanview.com/main_download_engl.htm
Yes Irfan View should be your first choice. In this You can resize your images also.
Iview, or Xn view, or Moo0 all of them can do.. but first prefer iview.. its small easy and customisable. 
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The Simplest Way to Crop in Windows 7
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if you have lot of pictures, download VideoCharge Studio from *www.videocharge.com/Index.php, i think that it soft can help you.
it works on Windows 7
it works on Windows 7
I use the famous Adobe Photoshop CS2.
BTW, can we resize Gif without affecting their animation?