[Zope] Custom Zope ZPT login page

I use Zope with a custom application that I'm writing using strait Zope, MSSQL, ZSQL methods, and ZPT, with some python / javascript scripts along the way. I want to write my own login page, instead of using the HTTP auth, I would like to present a webpage saying 'login required' (which is open to anonymous) as an alternative to the popup HTTP auth. I've seen this with Plone, but is it possible with regular Zope? If not, what do I need to get that? Also, I'm using the LDAPAuth product, and I'd like to have it use NTLM authentication so people with IE wouldn't have to login. Is there a product out there which could do that? -- Thanks, Derek Wilson