I wonder if anyone can tell me if it's possible to do this... (I've looked through this forum and the documentation)

I'd like to suppress the error box that pops up (LGNCXW32 "User not found after searching the trees...") when an LDAP search fails using contextless login. I'm using Novell Client 4.91 SP3 on Windows XP/2003.

We're looking at implementing contextless login (to replace aliasing everyone in a single login container) and are concerned about people being able to guess and determine valid usernames.