Need image help with css
New to CSS, but not html. I have an image that I want to display on a web page. I have it all coded in, and the image is displayed. Problem is, it is displaying too large and is distorted. I made sure that I have height amd lenght specified for the image, but no matter what value I ut in, it displays the same. I was told it was a css problem, but can not find a solution. Any help appreciated.
<input type="image" src="http://sciano.cnc.net/ffice/images/paynow.png" border="0" width="100" lenght="100" name="submit" >