I have information that I am pulling down from a website. It has a calendar where you put in the date range. http://dividendinvestor.com/tracker.php

I would like to populate the code with the date range that I would like. Code of the the site:
NAME="rad1" VALUE="2009-6-26" checked >26</td><td align='center'><INPUT TYPE="radio" NAME="rad1" VALUE="2009-6-27" >27</td></tr><tr><td align='center'><INPUT TYPE="radio" NAME="rad1" VALUE="2009-6-28" >28</td><td align='center'><INPUT TYPE="radio" NAME="rad1" VALUE="2009-6-29" >29</td><td align='center'><INPUT TYPE="radio" NAME="rad1" VALUE="2009-6-30" >30</td><td align='center'>&nbsp;</td><td align='center'>&nbsp;</td><td align='center'>&nbsp;</td><td align='center'>&nbsp;</td></tr>

I am guessing the checked keyword tells it which radio button is selected. I would like to change the code to the date that I would like and resend it to the server. Can I do this? IF so, how?