Business Server Pages [BSP] v .NET v Java

This is a question for the SAP team.

I have a lot of experience in Javascript & ASP.

I have spent the last year writing apps in VB.NET using Visual Studio.

I have also been creating and calling web services

using ASP.NET.

I also have a years experience writing Java.

I am looking to create solutions in the area of Application integration, and I kind of favour using the .NET Connector SAP solution.

However, I have to share the server with others creating Java solutions.

My question is:

If I use the .NET solution, I presume I will need to e use M/Softs Internet Server [IIS], WAS only has ABAP and Java engines.

Can IIS co-exist on the same machine as SAP WAS??

I think not as they probably both use port 80!!

Therefore maybe I am better off using BSP [with Javascript], but then do I need ABAP experience??

Should I be looking at using JSP and hope I have enough Java experience??

My preference is for .NET, then BSP and lastly JSP.

What does the support team think??

Thanks

Sean