Sorry I am not here as often as I used to be ....or should be...
and there aren't the numbers of n8x0 users floating around currently as one would like...
Blame a nice summer for this

You are asking about a very specific type of utility ...
and some others may know more having dabbled with it...
where I haven't .

Since the back porting of many n900 progs and apps and bits and pieces ....it is quite possible that some of our n900 family know exactly what you need ...where to find it...how to adapt it...etc.
I would suggest a query in the n900 and fremantle subforums ...where the question will get the highest exposure of views from n900 users ...
It is possible someone there will know...since they may use the service on the n900...