Sunday 15th March 2009 should see Discovery finally on her way to the International Space Station on mission 15A.
UK viewers should be able to see the launch on Sky via. Fox News channel 509. Set your Sky+ to record 11pm and 12pm programs.
More here from the Orlando Sentinel - http://blogs.orlandosentinel.com/news_space_thewritestuff/2009/03/nasa-clears-space-shuttle-discovery-for-sunday-launch.html