can anyone give me the full project containing the code as well for getting host ip address using DHCP.I am using real view MDK ARM version 3.50
There are very many of those - both commercial paid-for ones, and free open-source.
Some are mentioned here: http://www.keil.com/tcpip/links.asp
Chip suppliers often have a "special deal" with one or more 3rd-party providers...
Or, if you really want someone to do it all for you, see: http://www.keil.com/condb