Struggling with the javascript installation

I'm a newbie, so please bear with me...

I'm trying to get the textarea to work in a asp.net 2.0 web page, using master/content pages, but I keep getting this error in the browser:

"FCKeditor is undefined. "

It seems like the textarea is not being replaced with FCKeditor's.

I have triple checked the paths, and they seem right.

I'm using IE7, haven't tested on anything else.
code below:

var sBasePath = '/fckeditor/' ;
var oFCKeditor = new FCKeditor( 'FCKeditor1' ) ;
oFCKeditor.BasePath = sBasePath ;
oFCKeditor.ReplaceTextarea() ;

...

<textarea id="FCKeditor1" name="FCKeditor1" rows="10" cols="80" style="width: 100%; height: 200px">This is some &lt;strong&gt;sample text&lt;/strong&gt;. You are using &lt;a href="http://www.fckeditor.net/"&gt;FCKeditor&lt;/a&gt;.</textarea>

Any help would be greatly appreciated.