Radio button - how to auto click second of two buttons

[aaa123456]

Hi. Totally new to AutoHotKey and am hoping someone can help a total newbie.

I need to be able to select the second of two radio buttons.

It seems ControlClick ["blank"] will target the window's topmost control and this will be clicked.

I do not want to use Mode 1[(Position) or Mode 2 (ClassNN or Text), i just want it to select the second button which is the only other button available on the page.

Is there any way to skip over the first button and click the second/other/last button that anyone knows of?

Any help would be very much appreciated.
Best wishes and thanks.

P.S. The Radio buttons are similar to these where the returned value(second attribute) 0 indicates the first purchase option ($20 book) and the returned value of 1,the second purchase option ($25 book with cover).
The number 61(third attribute) is a client id number.


<tr>
<td><input type="radio" name="book" id="book" value="1,0,61,0,20,2" />
1 book&nbsp;</td><td align=right>$20.00</td>

</tr>
<tr>

<td><input type="radio" name="book" id="book" value="1,1,61,0,25,2" />
1 book with cover&nbsp;</td><td align=right>$25.00</td>

</tr>