Is it possible to run classic asp on Cassini Webserver?

Is it possible to run classic asp on Cassini Webserver?

I have a mixed website (classic asp and dotnet)...

No, you can't. Cassini only renders ASP.net pages.

Have you considered IIS Express? It's similar to Sql Server Express user instances in that it can be run and used without requiring administrative privileges or changes to your code to cater for it. It's a "user mode" version of IIS, and thus fully supports Classic ASP which would help with your scenario.

It's not integrated into Visual Studio (in the same way Cassini is) yet, but there'll be a tooling patch to do that at some point.

Cassini is run from within Visual Studio. If you have a solution that contains both ASP.NET and ASP, it will continue to run on Cassini. But you can not run a pure classic ASP application this way.