Thanx for your suggestion ,but i have to do it in C .Please help me if you can.
Thanx.....

Thanx for ur suggesion.I want to explain my problem again.Its simply an intermal email system in which the coding is to be done in Java.There is a server which takes the responsibility of the client and keeps its database.The client can simply see,delete his mails and can send anyone registered to the system.This system is meant to the Windows operating system.
Please help me if you can solve my problem.I willl check the site you have suggested...

Dear everybody,

I have to write a program that implements a real-time multicast calculator service. Users join a multicast group and are able to send equations to other clients for calculation - no separate server is needed. Calculations are sent in a single string to the multicast group and the result is returned once it has been calculated by a client in single string containing the equation and its result. The client must be able...

Dear everybody,
I need to make a Internal E-mail system.

The requirements of the system are as follows: New users should be allowed to register into the system. The users should be authenticated with a password on login. After logging in, the users can send mail to other users of the system and read mail sent to themselves. The users should also have a way of deleting messages sent to them after reading.

...