Welcome to xcart!
The very first thing you need to learn to minimize hunt and peck and endless clicking:
WEBMASTER MODE
http://help.x-cart.com/index.php?title=X-Cart:Using_Webmaster_mode
Webmaster mode will point you to every template, variable and language
Using Webmaster mode, you'll see that the special menu is a template
/skin/common_files/customer/special.tpl
and the special menu is made up of many other template calls, such as:
{if $active_modules.Gift_Certificates ne ""}
{include file="modules/Gift_Certificates/gc_menu.tpl"}
{/if}
OK -- let's look at gc_menu.tpl
<a href="giftcert.php">{$lng.lbl_gift_certificates}
Ah -- the text for the menu is a language entry.
OK, so go to your languages:
/admin/languages.php?language=en&topic=&filter=lbl_gift_c ertificates
Change the content of the language entry.
You're done.
Yes, there is an easier way (with webmaster mode) but this long way around the block is how you are certain to edit the correct item, every time.
HTH
J