VB6 and IIS5

Dear all

I am looking to do some development for a web front end. I can code in VB6
and
have a number of web sites running IIS4 with VB6 DLLs. I am going to upgrade
the server to IIS5 with the same DLLs.

I need to get a site running which will host between 1000-2000 concurrent
users, and am considering creating this with VB6 and IIS5.

Are there any scalability / resilience issues with this option. .Net is not
an
option.

I have searched the Microsoft for recommended maximum number of users for
web sites created with VB6 hosted on IIS5. But was not able to find any.

As well as links any thoughts / advice or posable pitfalls would be
appreciated

Thanks