app rqrd

Hi All
I want to develop a web site with following functionality
Any one with valid user id can enter the sites log page.
The moment user logs in, I will be informed on my adminstration
page that a perticular user is logged in and i must be able to access his PC for either copying files from my PC to user PC and vice versa. After finishing this, I must be able to display a message on user comp about the work completion.
Is this possible?
If yes, it is not the full specs. Let me know how much $ are required for such development so that i can think on it.
Thanq
Radhesham

You can't copy files from his computer. What you can do is let him (the user) upload a file to the server, and you'll have to download it.

Dear Kings
how hackers copy the data from any body's PC?
Can that methods will be used for good work?

They either use trojans, or "hack" the computer. You can't really copy files through the web/internet. What you can do however, is use programs (there are several out there) to exchange/copy programs.

Kings
Thanks for the information.
Could you please oblige by giving me some names and links of the programs you mentioned to copy/exchange files.
Thanks
Radhesham