Hi simbala,
I did download that version, but now it won't install cause it says I have another version running. Is php5 is enabled even though I disabled php in the httpd.conf file by removing the #, and also made sure mysql wasn't running?
I finally did find a php5 folder, and a php4 folder, in the trash in the MAMP folder, and put the php5 folder back on my desktop cause I wasn't sure where it actually came from. I wouldn't mind restoring it to it's rightful place, just to get it all working, then worry about installing the better version later. (For right now, I'm just trying to twiddle with my WP theme and learn php a little.)
It's not clear to me what files are contained in the php installation and where they live. If I knew that, could I just drag them back to where they belong (I think MAMP relocated them.)