Hi Mandy
I have just converted a Samsung DVD-R149 to multi region with this sequence,
Same hack for the R136 works for the R145:
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
Tested and Worked on my UK player (Region 2).
As you can see this was used first on models 136 & 145, so I took a chance on it working on 149, it did!
Regards
Rod
Rod Vaughan
July 2007