Hi,
To declaire dividend is a completely different issue altogather. the company may declaire dividend only in case there is a profit with the coampny.
About the buy back, the process is a little complex one. surely a pvt comany can buy back its shares. with regards to the capital loss in the hands of the shareholders, yeas they can take the benifit of the same. but as a matter of fact whaich shareholder will do it is the question.. i mean look, if you as a shareholder hold a share that you had bought for Rs. 100 (including premium) and your company is willing to buy it back at Rs5 will you ake up the offer to suffer the losst?? why not instead hold the share?