Mapping look-ups

Hi

I have seen blogs on RFC,SOAP and JDBC Mapping Look-ups.But I have a mapping look-up requirement where, there is a

service provider, and if I put mapping value in one of JMS queue, service provider will return the corresponding

value in another JMS queue and I have to map that value during mapping. I didn't found any threads or blogs on this

particular topic. Is it possible to do this in the way that I explained ??

Thanks

Kumar