Harrah's rooms have Wi-Fi at a cost of $16/day/device. This means that your laptop & iPod Touch will cost you $16 EACH for 24 hours of service. Keep in mind, this is for when you're in the room. You may be able to find other free Wi-Fi signals around and there's another thread on that topic. Use the search function.
Now, if you don't mind the $16/day, especially if you consider the fact that you can use your TR credits to pay for it and Harrah's
gives you a choice by not wrapping it into a resort fee, there are a few ways around having to pay for both devices...
If you are using an Apple computer, you can use the wired connection for the internet and turn your laptop into a Hot Spot for your iPod Touch. See details here: TUAW: Mac 101
If you travel enough, I would suggest getting an Airport Express. It works on Mac's & PC's and the latest version (N) can be had for ~$60 on eBay (that's where I got mine). In bridge mode, it take your hotel internet and creates an instant Hot Spot, so you can use the iPod Touch & laptop wirelessly for the 1 device fee. Additionally, it has an audio port that allows you to wirelessly feed music from iTunes to it. I love mine!
You may be able to do the first trick with a Windows PC (especially on Windows 7) but I have never personally tired it and therefore can't comment on how easy/well it works.