There are accent reduction courses (http://www.usingenglish.com/links/Sp...Pronunciation/), but it's hard to change a regional \accent quickly. If you're going to a new area, just listen careful to the sounds around you and slowly absorb them. I arrived in a strong Cockney area with a Queen's English accent, and left with something acceptable in pubs, but never changed completely. Jut cut down on the Wurzels sounds a bit and you should be alright. When you're surrounded by speakers with other accents, you'll find that you can change soon enough.
- For Teachers