Yes, it is compatible with Windows 7.
What is the specific issue you are having with installation?
I have tried to install WordPerfect Office Editor 3 as I have used it for years but I can not get it to work in my Windows 7 vm (parallels). It states that it is not a 32 or 64 bit version. It worked in XP but not in Windows 7. I found one site at:http://www.columbia.edu/
that addressed using WP with Windows 64 bit but the site is old and the files were from a dropbox that does not appear to still exist.
My issue is that even with DOSBOX installed it hangs my computer which I am using Wndows 7 (64 bit) and would love to be able to use it again as it does a lot of things that I can not do with other editors like search for or insert new hard returns as part of the search and replace function.