hi,
it seems like you're really frustated with it, but i'll see what i can do
first: why did you install multiple versions of mysql and php on your computer? as they are all upgrades of the previous version, you only have to install the newest one.
second: is there somethin like an installed software list on the mac os (i'm working with windows so please forgive me if there isn't one)?
three: if so, can you uninstall software through that application?
four: remove ALL installed php and mysql versions.
five: reinstall the latest versions of both application (PHP 5.1.1 and mysql 5.0). All your existing databases will remain on your computer
post the problems here
Greetz,
UnrealEd