'Web servicification' of internal systems as prelude to ESB.

Hello again.
Finding it hard to navigate our way to a suitable ESB solution, my employer wishes to at least expose all relevant internal systems as web services so that hopefully within time and growing maturity of ESB (I like what JBI promises), we have systems that can with relative ease, be integrated into a federated ESB solution.
What I would like to have is an implementation of a lightweight web service engine. I don't want something like instances of SJSAS (a JVM daemon would be great) on our host computers. We can expose these services to customers, many of which are already provided for in a non-WS (barely XML) way, as mere P2P. When the time is right to fit an ESB, these lightweight engines would ideally serve as adaptors.
I sure there are others who have done this as a preparatory move to their own ESB installation...
Any suggestions?
Thank you for your considered replies,
Owen.

Here's an update on my travels...
I had a talk on the Apache Axis mailing list and was referred to a very new (Version 0.91 was apparently released on 2 February) Apache project called Synapse. It appears to have scant documentation at this early stage, and I'm just wondering if anyone here might be able to advise me if I might be on to something that will work for me.
Thanks again for any help,
Owen.

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'Web servicification' of internal systems as prelude to ESB.

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