I have one of these
http://vodafone.com.au/help/mobilebr...wifi/index.htm
this little toy gives me a wi-fi connection to a 3g internet connection. I use it for my laptop and e-ink nook when I'm travelling to work. I hope it works with the nookcolour then I can have 3g internet access ..no need to find a wi-fi hotspot when I'm out an about.