Thank you all for the replies. To be frank, they left me confused. When you talk about a "rack" I assume you refer to the Music Creator 5. Music creator SEES the TSS-1 OK.
The question was: how can I make BB see the synth. It does not show up in the BB Midi synth list (Coyote and many Roland synths are in the list but not TSS).
Andrew's screenprint SEEMS to be from BB; the upper lefthand icon looks like the BB logo. But I don't find it in my BB, nor do I see any other menu item that would allow me to make an additin to the synth list.
Could it be because I have an old 2007.5 version on my laptop which I took along while travelling in Europe (till April), leaving my PC with newer version in Holland?

I know where the TSS-1 DLL is located. Can I solve the problem by making a copy to a particular location in the BB (sub?) folder?

Thanks for your help.
Dutchie.

Sony VPCF13Z1E, Intel i7 Q740 8Gb Win 7 64bit. Yamaha WX 5 windcontroller - VL70m.