[akanevsky]

In template navbar,

FIND:

			<if condition="$bbuserinfo['userid']">
				<td id="usercptools" class="vbmenu_control"><a href="$show[nojs_link]#usercptools">$vbphrase[quick_links]</a> <script type="text/javascript"> vbmenu_register("usercptools"); </script></td>		
			</if>

UNDER THAT, ADD:

			<if condition="$bbuserinfo['userid']">
				<td id="MYUNIQUEID" class="vbmenu_control"><a href="$show[nojs_link]#MYUNIQUEID">$vbphrase[MYPHRASE]</a> <script type="text/javascript"> vbmenu_register("MYUNIQUEID"); </script></td>		
			</if>

FIND:

	<if condition="$show['member']">
	<!-- user cp tools menu -->
	<div class="vbmenu_popup" id="usercptools_menu" style="display:none">
		<table cellpadding="4" cellspacing="1" border="0">
		
		<tr><td class="thead">$vbphrase[quick_links]</td></tr>		
		<if condition="$vboptions['enablesearches']"><tr><td class="vbmenu_option"><a href="search.php?$session[sessionurl]do=getdaily">$vbphrase[todays_posts]</a></td></tr></if>
		<tr><td class="vbmenu_option"><a href="forumdisplay.php?$session[sessionurl]do=markread">$vbphrase[mark_forums_read]</a></td></tr>
		<tr><td class="vbmenu_option"><a href="#" onclick="window.open('misc.php?$session[sessionurl]do=buddylist&amp;focus=1','buddylist','statusbar=no,menubar=no,toolbar=no,scrollbars=yes,resizable=yes,width=250,height=300'); return false;">$vbphrase[open_buddy_list]</a></td></tr>
				
		<tr><td class="thead"><a href="usercp.php$session[sessionurl_q]">$vbphrase[user_control_panel]</a></td></tr>
		<if condition="$show['siglink']"><tr><td class="vbmenu_option"><a href="profile.php?$session[sessionurl]do=editsignature">$vbphrase[edit_signature]</a></td></tr></if>
		<!--<if condition="$show['avatarlink']"><tr><td class="vbmenu_option"><a href="profile.php?$session[sessionurl]do=editavatar">$vbphrase[edit_avatar]</a></td></tr></if>-->
		<tr><td class="vbmenu_option"><a href="profile.php?$session[sessionurl]do=editprofile">$vbphrase[edit_profile]</a></td></tr>
		<tr><td class="vbmenu_option"><a href="profile.php?$session[sessionurl]do=editoptions">$vbphrase[edit_options]</a></td></tr>
		
		<tr><td class="thead">$vbphrase[miscellaneous]</td></tr>
		<if condition="$show['pmstats']"><tr><td class="vbmenu_option"><a href="private.php$session[sessionurl_q]">$vbphrase[private_messages]</a></td></tr></if>
		<tr><td class="vbmenu_option"><a href="subscription.php$session[sessionurl_q]">$vbphrase[subscribed_threads]</a></td></tr>
		<tr><td class="vbmenu_option"><a href="member.php?$session[sessionurl]u=$bbuserinfo[userid]">$vbphrase[my_profile]</a></td></tr>
		<if condition="$show['wollink']"><tr><td class="vbmenu_option"><a href="online.php$session[sessionurl_q]">$vbphrase[whos_online]</a></td></tr></if>
		
		</table>
	</div>
	<!-- / user cp tools menu -->
	</if>

UNDER THAT ADD:

	<!-- MY CUSTOM MENU -->
	<div class="vbmenu_popup" id="MYUNIQUEID_menu" style="display:none">
		<table cellpadding="4" cellspacing="1" border="0">
		
		<tr><td class="thead">$vbphrase[PHRASE_CUSTOMMENU_TITLE1]</td></tr>		
		<tr><td class="vbmenu_option"><a href="MYCUSTOMLINK.php?$session[sessionurl]">$vbphrase[MYCUSTOMLINK_TITLE]</a></td></tr>

		</table>
	</div>
	<!-- / MY CUSTOM MENU -->
	</if>

Now, make sure to read through the HTML you just added and replace:
MYUNIQUEID - all instances - with the same custom value
EVERYTHING ELSE IN CAPS - with your custom content
And of course, create the phrases you need.

Done!

I might add this to my custom vB-powered pages manual later on...