not sure if this helps you or not (will likely need "tweaked")...
i add my "own" Search Box at the top of the page and it works
(but it also relies on Netflix *NOT* having a "real" e-mail address, wink, wink...)
Code:
Name = "<div>: Replace 'Your Email Address Is Invalid' with Navigation Content"
Active = TRUE
URL = "$TST(hCT=*html)[^/]++.netflix.com/"
Bounds = "$NEST(<div,</div>)"
Limit = 2000
Match = "*(Your Email Address Is Invalid)\1*"
Replace = "<center>"
"<span class="Pr0x Pr0xComment" style=display:none;>"
"\• Netflix - \1"
"</span>"
"<div class="links">"
"<a href="http://www.netflix.com/YourAccount" style="color:#00458B">Your Account</a>"
" | "
"<a href="http://www.netflix.com/Queue" style="color:#00458B">Queue</a>"
" | "
"<a href="http://www.netflix.com/Replacement" style="color:#00458B">Replacement</a>"
" | "
"<a href="http://www.netflix.com/Logout" style="color:#00458B">Sign Out</a>"
"</div>"
"<table border=0 cellspacing=0 cellpadding=0><tr>"
"<td align=right><form name="search" action="http://www.netflix.com/Search"><input type="text" name="v1" style="color:#666666; width:180px; height:17px; font-size:11px; font-family:arial;" tabindex=1 value=""></td>"
"<td> </td>"
"<td align=left><input type="image" src="http://cdn.nflximg.com/us/layout/headers/searchbutton.gif" alt="Go" name="search_submit" align=right border=0 tabindex=2></td>"
"<td></form></td>"
"</tr></table>"
"</center>"