There are a lot of approaches to this. Lets take them one at a time:
<noscript><meta http-equiv=”refresh” content=”0; url=whatyouwant.html”></noscript>
<!–hide script from older browsers
<form id=”form1″ runat=”server”>
<label Id=”lblWarning”>Your Browser has Disabled Scripting</label>
lbl.style.display = ‘none’;
Hope this was useful. Feel free to add on more options.