Is it possible to connect two computers with USB extension cable?

I guess YES. but you need to use the software which comes with the usb wire kit to copy files from one to the other.

i do believe there is a way to connect a lap top to a pc. although i have not done that before so i'm sorry if i'm not much help. but i have seen my brother do that before and have them interact with each other. my brother is a computer programmer so he knows alot about computers.

Yeah it is possible but I agree with above post that you should use LAN instead of USB extension cable as it's easy to connect and also reliable and faster network. You can refer http://www.techspot.com/vb/all/windows/t-301-How-to-connect-2-pcs-via-USB.html

this is possible but the speed will not be enough and you will need software to configure them. i think there is a better way to use the LAN wire and by that you could get the better and faster speed and this is easier to configure.

Years ago, I have used serial and parallel cables to transfer data between computers. Serial cables are null modem : I made one to transfer data from a casio PV to a psion 5mx. A USB transfer cable is also a special cable. They are sold with software -- Microsoft sells Windows Easy Transfer -- and I don't use them anymore. If you have a wifi router and a laptop with wifi, you can transfer easily your files from your laptop to your desktop as I do, with a local FTP server.

I dont think so.. because i think USB is just for flash drive and any removable disk.. you could use lan connection or cable.. and im sure that it will work,.. :)