[redhead]

Would somethign like this do ?

...
<script language="javascript">
<!--
var description = new array (
<% dim i 
for i=lbound(arrDescription) to ubound(arrDescription)%>
"<%=arrDescription(i)%>",
""
);

function PopulateDesc(prod)
{
     document.myForm.description.value=description[0 + prod];
}
// -->
</script>
...
<form name="myForm">
<select name="products" id="products" language="javascript" onChange="PopulateDesc(myForm.products.value)">
<% dim j 
for j=lbound(arrProducts) to ubound(arrProducts)%>
<option value="<%=j%>"><%=arrProducts(j)%> </option>
<%next%>
</select>
<input type="text" name="description" value="">
</form>
...