Pan for sole proprietor firm

Hii all,

FACTS

One of my client is having his own PAN card and he is a partner in a firm and also having PAN card of that partnership firm. That partnership firm didnt undertake any business and no ITR was filed ever.

NOW the client wants to do that partnership business in his own name only (i.e SOLE PROPRIETORSHIP).

QUESTIONS

NOW my questions are:

1) should the client surrender PAN card of partnership firm? if yes what is the procedure for the same ?

2)should he apply for a new PAN card for sole proprietorship firm or his own individual PAN is sufficient?

3) if it is OK with own individual PAN CARD, can i proceed with the service tax registration ? and how much time will it take to get service tax registration certificate?

pls suggest

thanks