Sorry for the double post but I found no way to edit the previous.
Windows 2000 (and probably XP) ships with SETVER.EXE utility that is able to fool applications to make them think they are in a specific DOS version, like the SETVER.EXE from DOS. Simply open config.nt (inside Windows\System32 in XP) and add the following line:
in any place, but I like putting it below the himem.sys line. Save and close.
After that open the command prompt and then type "SETVER ???????.EXE 7.10" where ???????.EXE is the executable name and 7.10 is the version you want. It will ask you to reboot but I doubt you'll need to do this. I think you only need to close the prompt and then open your program (by double clicking). I did not test if the SETVER really does what it is intended but I've verified that it loads correctly.
EDIT: Discovered the small button that lets you edit your post
EDIT2: Tested and it works. You just have to make sure SETVER is in config.nt, close all Command prompts, start a new one, type the "SETVER (...)" linbe I mentioned before, close the command prompt windows again, start a new one and it is done