For a UK Region 2 Samsung DVD-R149:
1. Press the Menu button on your remote control
2. Press the 5 button on your remote control
3. Press the 7 button on your remote control
4. Press the 5 button on your remote control
5. Press the 3 button on your remote control
6. Press the 8 button on your remote control
7. The currently selected region will be indicated on the onscreen display
8. Press the 1 button on your remote control for region 1, the 2 button for region 2, and so on, or the 9 button for multi-region playback
9. Press the Menu button on your remote control
10. Press the Menu button on your remote control
Hope this helps
Dave, November 2008