Yes, your wireless card will work here. The standard is global.
However, you'll need to find a wireless 'hotspot'. You'll also need to subscribe to the service.
Places like Starbucks, PC World and some Motorway service stations have wifi hotspots, as do the major airports.
British Telecom has this service: http://www.btopenzone.com/
Oh, if that Internet Cafe allows you to connect then that's great too! You won't need BT OpenZone then.
Oh, and I moved this topic to Questions and out of Site Help