foreign dvd format wont play in UK player or p.c . any help??

Went to Turkey on holiday and came back with 10 dvd copies that wont play on any of my players or p.c. Message on p.c is ' un supported format' can anyone help please?? is there a prog to overcome this or re burn dvd into UK format.
Thanks

U don’t have 2 do anything if ur standalone DVD player is region free or multi4mat. N s 4 ur PC..U can dl a programme/software called css region free. It’s a shareware.
www.afterdawn.com/software/video_software/ dvd_tools/dvd_region_free.cfm