Service Orchestrator Web Service

just a quick question which you may already have an example of (or 1 of your colleagues), when using the Service Orchestrator sequences as a web service, has anyone then used this web service from an Excel worksheet to retrieve data?
I have a requirement to use Excel to validate and retrieve/update data on the Adabas database, from a Mediator sequence. If I use the sequences as a web service, how can I reference this from Excel. There is an XP Web Services toolkit from Microsoft, but no example of wht the code etc looks like.
Any help much appreciated.