Re: USB Network Card?? I'd like to...
There are USB Ethernet devices.
However, does your laptop have USB 1.1 or USB 2.0?
I personally prefer to use PCMCIA network card. I have three that I bought used on eBay that works in Linux - 3Com 3C574-TX , 3Com 3CCFE575BT , SMC SMC8401TX. You should be able to find them cheap.
I have a friend who turned an old desktop into a firewall for his home network. http://www.smoothwall.org/
Dell Precision M6300 laptop - Windows 7 / Ubuntu 12.04
IBM Thinkpad 600E laptop - Puppy Linux 4.3.1