Connect PC to laptop with android Is it possible to connect PC to laptop with Android phone to share files between PC and laptop? I don't have a LAN cable, all I have is: 

A PC without WiFi adapter.
An Android USB cable. 
An Android phone. 
A laptop with built-in WiFi. 
Both PC and laptop have Windows 7.  

What I'm trying to do is: 
1. Connect Android to PC with USB tethering. 
2. Then connect Android to laptop with WiFi tethering. 
3. Then I want to share files between PC and laptop.  

I don't know much about networking stuff. 
Please tell me if you know.
It's possible if you are using Cyanogenmod even without any 3rd party software:

Connect the phone to the PC and enable USB tethering. Then create a hotspot on your laptop and connect your phone to it.

After that, your phone shares it's WiFi connection to your PC, so you can transfer files and use internet.

If you're not a CM user then try using PdaNet+

https://play.google.com/store/apps/details?id=com.pdanet