What kind of operating system you use? Windows XP or Windows Vista?
You have free image editor called Microsoft Paint that is found at 'Start' button > All Programs > Accessories > Paint.
Work With An Existing ImageTo open an existing picture file, click File > Open. Browse to where the file is located on your hard drive, click to select it then click Open.
To insert a picture onto an existing canvas, use Edit > Paste From and browse to where the picture is located on your hard drive. Click to select the picture you want then click Open.
The picture will now appear on your canvas. The image will have a dotted outline meaning you can move it by clicking on it and dragging it, or you can resize it by clicking on the corner handles.
To change the appearance and size of a picture, use Image > Stretch/Skew to stretch in percent and skew in degrees. For example, if you have a picture you would like to double in size, enter 200% in the horizontal and vertical boxes.
From the Image menu you can also choose to Flip/Rotate an image, or Invert Colors which gives you a kind of 'negative' effect.
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I suggest you to use Image Menu to choose Flip/Rotate an image from upside down image to normal image.
By the way, I heavily use Adobe Photoshop to do the job instead of Microsoft Paint.
Good luck!