[Staffslug] Mobile internet/broadband

Hi guys! I need to get some info on mobile broadband/internet. My partner is currently in hospital and wants to use the Internet so I've been tasked to sort her out with the kit she needs. She runs ubuntu 10.04 and is quite savvy but anything too complicated would be needed to be done by myself at home. I'm told that most dongles work, Does anyone have any advice as which to get? Thanks! ~Jon