Dragan
Here's a BBC web site on the "routes (pun on roots) of English" that you might be interested in/in which you might be interested. I've got one of the books and an accompanying CD from the radio programme.
http://www.bbc.co.uk/radio4/routesofenglish/index.shtml
- Whoever said that women are the weaker sex never tried to wrest the bedclothes off one in the middle of the night
- Worry is the interest you pay, in advance, for a loan that you may never need to take out.