As you know, DOS applications do not work in Windows 7, and Windows 7 (64 bit) has even more problems with them. You could install a Virtual Machine that emulates XP, but I find it is not worth the trouble for occasionally playing with such applications.
DosBox still works on Windows 7. I tried it. You get an error after installation, but that does not seem to hamper the program. Here is Lotus Agenda running on Windows 7 (64 bit):
It even works full screen:
For some reason, capturing the full-screen application does not return the proper colors, but this is what it looks like (except with the blue color scheme).
A wasted Sunday morning? Perhaps ... but perhaps it could also serve as a new version of minimalist computing? Wordperfect MS-Windows for DOS, Grandview, they all run in DosBox. You could even install Windows 3.1 ... to run the first version of InfoSelect ... But I won't.
I just wish that the unparalleled text matching of Agenda was realized in my favorite application.
By the way, there is DosBox for the Mac as well.
1. Actually, the color scheme changes only if you capture the screen of the full-screen application. If you just use it, it remains as expected.
2. Here is Grandview:
3. See also Agenda. If you want to install DosBox, these instructions help.