When logged in as portal administrators, and you have entered the Image module, click Edit Image Module Options. The following dialog box will be displayed:
In order to provide the visualization of an image located on the site in the Image module, select File in Link Type. If the image has already been uploaded in the File Manager by the administrator, select the name of the image to display from the drop down list. Instead if the image has not been already uploaded in the File Manager, click Upload New File.
At Alternate Text, enter the text that will appear when the image is moused over by a visitor.
At Width and Height enter the image dimensions: if such data is not specified the image will be displayed as its original size.
In order to proceed with the insertion click Update.