Valid href link?

Running my page through the w3c xhtml validator I get an error
at this line of the code

<td id="Col1" align="center" width="50"><a href="index.asp?SortOrder=1&Sort=StockNo DESC&type=new" title="Click to sort" >Stock</a></td>

I would think that this would'nt matter it is a link... the error that I get is

Line 132, column 73: cannot generate system identifier for general entity "Sort"
Line 132, column 77: reference not terminated by REFC delimiter
Line 132, column 77: reference to external entity in attribute value
Line 132, column 91: cannot generate system identifier for general entity "type"
Line 132, column 95: reference not terminated by REFC delimiter
Line 132, column 95: reference to external entity in attribute value
Line 132, column 100: cannot generate system identifier for general entity "search"
Line 132, column 106: reference not terminated by REFC delimiter
Line 132, column 106: reference to external entity in attribute value

Seems like a lot of errors for one line... what am I missing?

D--

I figured it out like 2 seconds after I posted sorry to take everyones time.. the anwser I think is to replace the & with &amp