Hi Chi Thanh,
Sorry I was busy and did not check in for a week. As you mentioned before, that your project must turn in by the end of Feb; I don't know how good is your programming skill so, I don't know you can finish on time.
For hardware, as far as I understand, you can use your USB link cable connect PC to PC for link together.
For software, you can go to this link to download driver.http://www.usbgear.com/Downloads.html
There are many drivers, you must pick out right one. I have not work with this cable before but, I would assume that it would not be very hard. Read the CLAIM that they said in their ad:
USB host to host communication
High-speed data transfer rate up to 8Mbps max
Single cable solution for data communication
Plug & Play and hot pluggable
No external power needed
Windows 95, 98, 2000, XP and MAC Support
Easy drag-n-drop file transfer
Includes print function for remote files
Low power consumption. Includes power management and remote wake-up functions
Windows Program Manager-like interface
Compliant with USB specification 1.1
If I have one cable I would like to do some thing to help. Try to download the right driver and use Visual Basic to write a simple program to transfer a file prom one PC to the other to see how it work.
Read one line that they claimed: "Easy drag-n-drop file transfer". I would think this will work for your project.
So, go to "usbgear.com" to find your driver. Did you get any software with your cable??? You should have some something.