For verson 1.3 you need to have a save file present and an unprotected executable.
Open "dmc3se.exe" with a HEX editor. Search for...
AA AA AA C1 E2 02 F7 E2 D1 EA 3B CA 74 0C C7 06 80 02 00 00 C7 07 E0 01 00 00 5F 5E C3 90 90 90 8D 44 24 08 8D 4C 24 04 50 51 E8 B1 FF FF FF
Change the bolded values to your desired widescreen resolution. Remember to flip the order.
Using 1920x1200 as an example...
AA AA AA C1 E2 02 F7 E2 D1 EA 3B CA 74 0C C7 06 80 07 00 00 C7 07 B0 04 00 00 5F 5E C3 90 90 90 8D 44 24 08 8D 4C 24 04 50 51 E8 B1 FF FF FF
Then open up your sav file(s) with a HEX editor. The format for the files is "save#.sav". Scroll to the bottom of the file and scroll up until you find a non-zero value. This will be the current resolution value you have selected in-game. For example a 640x480 resolution...
00 00 80 02 00 00 E0 01 00 00
Change these values to match the resolution you added in the first step. 1920x1200 example...
00 00 80 07 00 00 B0 04 00 00
Done. Stretch.
i Open the Dmc3se.exe but cant find this
AA AA AA C1 E2 02 F7 E2 D1 EA 3B CA 74 0C C7 06
80 02 00 00 C7 07
E0 01 00 00 5F 5E C3 90 90 90 8D 44 24 08 8D 4C 24 04 50 51 E8 B1 FF FF FF can some1 help me i use hex editor also