Hi
i know this thread is a bit old but i have work this out for 4 Hours now and have the Solution so i will help others to the Trick
For templates\orderforms\web20cart:
On Line 12 BEFORE: {if $incartdomains}
{if $pid = '12345'} 12345=YOUR ID
<p><input type="radio" name="domainoption" value="subdomain" id="selsubdomain" onclick="document.getElementById('register').style.display='none';document.getElementById('transfer').style.display='none';document.getElementById('owndomain').style.display='none';document.getElementById('subdomain').style.display='';document.getElementById('incart').style.display='none'" />
<label for="selsubdomain">{$LANG.orderdomainoption4}</label></p>
{else}
and Double the last {/if} on Line 39
Done.
For templates\orderforms\modern:
On Line 12 BEFORE: {if $incartdomains}
{if $pid = '12345'} 12345=YOUR ID
<div class="option">
<label><input type="radio" name="domainoption" value="subdomain" id="selsubdomain" />{$LANG.cartsubdomainchoice|sprintf2:$companyname}</label>
<div class="domainreginput" id="domainsubdomain">
http:// <input type="text" id="subdomainsld" size="30" value="{$sld}" /> <select id="subdomaintld">{foreach from=$subdomains key=subid item=subdomain}<option value="{$subid}">{$subdomain}</option>{/foreach}</select> <input type="submit" value="{$LANG.ordercontinuebutton}" />
</div>
</div>
{else}
and Double the last {/if} on Line 71
Hope it would Hhelp someone.