This may be useful for somebody looking at Linux...
It was definitely a challenge. Primarily, the hard part was in regards to
setting up WinE (Windows Emulation, http://winehq.org/ and getting the right
libraries from a Windows installation to support the components that
RapidPHP uses for the editor. It's been a while since I was it up, but I
believe it was the MSHTML component that created most of the hassle. With
instructions on how to set it up, it shouldn't be a problem. It also did not
work with the newest version of WinE when I set it up. Unfortunately I can't
check the versions I'm using right now as I'm not at home, but I could send
a follow up with that information. I'll also give it a shot with the newest
version of WinE, to see if they have since updated some of the bugs that had
prevented me from using their most recent version in the past.
Also, RapidPHP works on XandrOS (http://www.xandros.com/) just fine without
any need to configure an emulator.