Windowed mode would be great. I was hoping to leave this on slow and run it on my other monitor while I did things.
Don't have this particular binary, but see if this helps:
Back up your exe, then open it in a hex editor and find a fragment like 05 f0 61 64 00 00 00 00 00 8b 4d 08 89. May be somewhere about 3/4 of the way down. Change the second 00 to 01, something like 05 f0 61 64 00 01 00 00 00 8b 4d 08 89.
If you can't find such a fragment, trim down some of the sides and try again. I think that single bit should make the difference.
If it works, you'll need to set 16-bit colour compatibility to the file, else it will just spit out an error.