How to pull/push data from/to existing SAP system?

Question

I need to connect to a SAP system, to pull/push data to/from that system?
I downloaded SAP PDK for .NET, build a solution using it, but this requires Portal Runtime for .NET to be installed on server, and this cannot be done, because SAP server is a Solaris one!

Also, I've checked existing solutions, but all of them use VS.NET 2003, to create what is called SAP Connector Proxy?

So, is there a way to connect to SAP system apart from using VS.NET 2003?

[Update]
Have any one checked this before, NCo. It's a SAP .NET connector for .NET 3.0?!

Answer 1

SAP Connector for Microsoft .NET 3.0 is already there as an official SAP .NET connector.

Answer 2

If it is possible to customize the SAP part, try to investigate PI, you can enable SAP.NET bidirectional communication via simple HTTP messages containing the data to exchange as n attachment. Very easy and stable way to go in my opinion.

Answer 3

It is possible to create webservices in the Sap environment. We use them extensively for CRUD of all sorts of data. I believe it's called XI Services, and you can find some information about it here.

The Sap analysts work in ABAP and send us ( .NET 4.0 developers working on VS2010 ) the wdsl's, all we have to do is integrate them into our solution like any other webservice.