I need to take a picture from one website and transfer to another website

First off, this picture must be your own. If you do not own the picture or have rights to it DO NOT DO THIS!
If it is your picture, simply right click on the image on the web-page it is on and click save image as... save it to your documents folder. Next you need to upload the picture to space of your own. Presumably you have a website set up. Use either the web-hosts built in uploading features or an FTP product to upload the picture from your documents folder. Once the picture is uploaded for this example lets pretend the picture was uploaded to http://usera.companya.com/usera/image.jpg
Now you need to edit your page. Either use a web-page editor and simply add the picture address in the the File name space or simply open your web-page in a text editor and add the following code with your own pictures address in place. (Note: the picture must be on the web for others to view it, do not add your copy from your hard drive in the web-page editor or in the following code)
<img src="http://usera.companya.com/usera/image.jpg" title="what you want to appear when the mouse hovers over the image" />
be sure to include the <>'s as they open and close the statement.