Help killing Admin Tools under NT

Hi all, Configuration : Informix OnLine (bundle with Netscape Enterprise server package). After some 'hazardous user/login & password manipulations', I now have a problem when launching the Administration Tools. For instance, when I launch the Database Explorer and I put my login & password to access one of the databases, I get an error message ('sqlinfmix.dll error - 406 memory allocation failed'). The same thing happen with the SQL Editor. The only one I can launch is the Space explorer.... With dbAccess in the command line utilities, I have no problems at all, I can access what I want and the way I want, so it's not a database problem... I removed the administration tools and reinstall them but the result is the same. If I launch the Admin tools from an other computer, it works fine. It seems like the remove operation of the admin tools doesn't do the job properly. How can I eradicate all the files that are used by the admin tools (without reformatting the all stuff !!!!) ? Anybody had the same thing ?? xavier flimon@reflexe.fr