How to copy file to Iphone?

Iphone is an strict smart phone. We are not allowed to change anything in there. So copying file to Iphone is an art.
First, you must jeailbreak your phone. All infomation about this we store at http://iphone-vietnam.net/forumdisplay.php?f=10. If you dont know anything please post your question there.
After that, open Cydia on Iphone. Please add source http://iphone.gsm.vn (some post before).
Install OpenSSH. This is an important application for accessing structure of Iphone.
Download WinSCP and install in your PC.
Connect your phone to PC. Turn on OpenSSH. Open WinSCP.
Enter the address 127.0.0.1, password: alpine for the firstime access.
Now you can see all the structure of folder.
Easily copy your file from PC to your Iphone.
Is it easy? I don't think about anything as easy as. Good luck.