Due to search function in SharePoint site, I do need to check Integrated authentication and basic authentication both on same IIS....if I only check basic authentication on IIS, users (Active Diretory Users) only need to put in username and psw when they login and that's exactly what we want. But in that case, search function in SP doesn't work due to crawl database needs integrated authentication. Once I also check the integrated authentication (also leave basic authetication checked), users need to login using domain\username....

Is there a way can do to only let user login using id and password without domain\?

Thanks in advance!