If you modify the page at:
http:// web.mac.com/chancepataki/iWeb/Site/GROUP BUY REGISTRATION.html
to change this part:
<div class="graphic_textbox_layout_style_default">
<div class="paragraph Free_Form" style="line-height: 17px; margin-bottom: 0px; margin-top: 0px; padding-bottom: 0pt; padding-top: 0pt; "><a href="http://www.n344rb.com/MUSICIANSWORKSHOP/" title="http://www.n344rb.com/MUSICIANSWORKSHOP/" style="font-family: 'Verdana', 'sans-serif'; font-size: 13px; line-height: 16px; opacity: 1.00; ">http://www.n344rb.com/MUSICIANSWORKSHOP/</a></div>
</div>
to be:
<div class="graphic_textbox_layout_style_default">
<div class="paragraph Free_Form" style="line-height: 17px; margin-bottom: 0px; margin-top: 0px; padding-bottom: 0pt; padding-top: 0pt; "><a href="https://www.n344rb.com/MUSICIANSWORKSHOP/" title="https://www.n344rb.com/MUSICIANSWORKSHOP/" style="font-family: 'Verdana', 'sans-serif'; font-size: 13px; line-height: 16px; opacity: 1.00; " TARGET="_top">https://www.n344rb.com/MUSICIANSWORKSHOP/</a></div>
</div>
that should do it
edit: that's assuming you were asking for help with the website

-- as for the mailing addresses, I'm sure one of us would volunteer to run the addresses through a validator, but we'd need to get the list somehow, of course (and whoever did it would need to be trusty-ish enough to be trusted with the list, but I'm sure that's not too big of a deal). Seems to me that the bigger problem is when people have moved since they put in the shipping address originally, and mere validation won't catch that problem -- there's no substitute for folks logging in and providing the new address, in these cases.