Print UPS labels - Rails plugin or available web service?

Does anyone know of a Rails plugin or an available web service that
allows for printing UPS shipping labels?

Andy wrote:

Does anyone know of a Rails plugin or an available web service that
allows for printing UPS shipping labels?

Perhaps UPS offers an API or web service?

Best,

UPS certainly do offer an XML service for arranging shipments. It
responds with a base64 encoded shipping label.

Ben

A quick Google on 'UPS web service api' led me here:

http://www.ups.com/e_comm_access/tracking?loc=en_US

HTH,
Bill