If your internal wireless card doesn't let you share wifi via the wifi, find a supported USB wifi adapter. I have a couple Linksys USB wifi adapters that I've used for this. Then connect the laptop's internal wifi to the hotel's wifi and setup ad-hoc or AP mode on the USB wifi, setup your NAT and routing rules, and away you go. A Mac laptop should be able to do this out of the box. Windows 7 can as well if you can find the right command lines to make it work, otherwise Connectify http://www.connectify.me makes it simple to setup on Windows. I honestly would have to look up how to set it up on Linux. All my Linux use over the past few years has been command line only... :) Alternatively, find a wall-wart Access Point/Router like the Apple Air Port Express. I have an older (and discontinued) Linksys router that I traveled with (http://amzn.to/wY6bXZ) when I was on the road for business. Thankfully there are lots of travel routers to be found: http://amzn.to/w0gKqs. The travel routers will generally let you convert wifi to ethernet, or share an ethernet drop via wifi. Very handy in Hiltons and other hotels that charge you for internet access, and I've found it tends to be more reliable as well to use the room's ethernet jack and share it via my own travel router than deal with everyone else on the wifi network. In some cases I was able to stream Netflix or play an online game via the room's ethernet and my router where doing so over the hotels wifi just wouldn't work. Also was nice to be able to use my iPod Touch or iPhone on wifi without having to pay for access for each device. -- Andrew S. Zbikowski | http://andy.zibnet.us IT Outhouse Blog Thing | http://www.itouthouse.com