transferring data from a PC to PC using USB??

Ordinary usb connector will not work. You need a specialized usb connector which are meant for connecting 2 pcs through usb.

There are some packaged programs available, they come with a software application and the specialized USB cable. If you're just copying data files you can go with the built-in peer-to-peer networking in windows. If you are trying to recreate the installed programs of one computer to a new one, I would check out one of the package programs.

It would be much easier if you're laptop and desktop had internet access both of them running through a router that would run through your cable or DSL modem. that way you can set it up where you can share certain folders from your laptop to have it transferred over your desktop. transferring using usb devices is too much work and a long process.

A USB to USB connector will work fine. There is no need to install any software. Just connect the two computers and start trasferring data via network cable. Good luck!