If you could please provide a link to your website it would be easier to help.
If you can't, be sure you have the image stored on the server in the correct location.
For example if your file structure on the website is
|
|- index.html
|- folder
|-- image.gif
You'd need to use
Code:
<img src="http://www.domain.com/folder/image.gif" width="x" height="y" />
To view it on the website.
You say you used "paste", I don't know how you pasted the image onto the website but you must have a copy of the image stored on your webserver
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Adventures in Oz