Hi Arun,
In the new PINE-SPARKY 2 (ep), you can launch PINE directly from UI not visiting PINE web page.
If you want to restrain already assigned chemical shifts, simply enabling Use pre-assignment option is enough. You can refer this page to see how it can be used:
http://www.nmrfam.wisc.edu/pine-sparky2.htm Please click Submit button in the UI not PINE Web. Just let me know if you still have trouble using it.
Best,
Woonghee