Due to some personal work I could not able to respond.
Thanks Narendran for your valuable suggestion.Actually I have tried it, but it is not allowing to enhance all the standard objects related to HR-Forms.
However, I have got a solution and implemented it to send an email and preview the form as required by end user with the help of Z program.
Once again thanks for your suggestions. Still this requirement is not yet closed completely. If any thing is there, I will definitely post it.
Regards,
Sai....