Have you tried the West-Wind bulletin board - there was a similar question I think, about a week ago http://www.west-wind.com/wwthreads

>>>Hi All
>>>
>>>I would like to create an app that would automate the downloading of files from a web-site. The problem is, because the site is secure and clients have to be authenticated with a certificate a number of dialog boxes are displayed. Is there a property or a way to:
>>>
>>>a) to determine if a dialog box has been created during navigation?
>>>b) reference these security alert dialog boxes?
>>>
>>... forgot to mention that I am using an Internet Explorer object to navigate to the site...
>>
>>Thanks
>>
>>Mace
>
>Sorry to bring this one up again, but I was wondering if anyone had any suggestions... my users are beginning to breathe down my neck.
>
>Any help much appreciated,
>
>Mace