i have a client server connection steady and running... but the problem here is that the file transfer is very crude and succeptible to risks... so i want to implement ftp.. can anybody suggest a way to implement it or any book to read?

try to implement the Vsftp ,as its a secure file transfer method, moreover check whether u have any outside expose much to the outside env, in that case secure connection can help

oh... right... now where can i get the issues regarding vsftp so that i can implement that ...?

vsftp has less issues , or try google for secure ftp service

You didn’t state if this connection was internal or external. You have many options to choose from depending on your criteria.
SSH, ftp with ssl, vsftp for secure connections. If security is not an issue then you should be able to shell script ftp from your unix platform (what ever that is). More details would be helpful…