Zahid,
What you may want to do is, do some research into WS and Grid that folks
have worked on since Y2002 atleast I know of. You may want to go to globus,
GGF, OGF and many other Grid centric sites and also many university websites
research WS oriented papers. I know that few years back there was major push
for the convergence of WS with Grid. In addition, you may also want to look
at application of WS enahanced Grid applications in Healthcare industry. You
need to visit many Grid and University sites.
Hope that helps.
Regards,
Rao