I see you got FarmFrenzy to install ok. I'm trying to install #2 and #3 for my wife. Under normal installation, it appears to install, but when I run the program, it starts up, then quits without any message.
I downloaded PlayOnLinux after reading your message but FarmFrenzy doesn't show up on the list of games. I tried a manual install, but the results where the same.
I tried it on her computer which is a Compaq AMD64 (New) and on my laptop an Apsire x86. Both are running fully updated versions of Ubuntu 10.4