Seems version # is everything when it comes to troubleshooting.

How do I easily find the ver# for each of the three programs?

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ABabb
Dallas TX

Well, when you installed the applications, you should have known which versions you downloaded. The version number is in the name of the download.

But aside from that if you're on someone else's system or everything was pre-installed, try the following:

Apache:
For Windows: Look at the properties for apache.exe and it'll tell you the version number. Or type in the following at a command prompt from the directory where apache.exe resides: apache -v

For Linux: Type in the following at the command prompt: httpd -v
Or if it was installed as an RPM: rpm -qa | grep apache

MySQL:
For Windows & Linux: Once you have MySQL running, connect to the server from a command prompt. Once connected, type in: SELECT VERSION();

PHP:
For Windows: Look at the properties for php.exe and it'll tell you the version number. Or type in the following at a command prompt from the directory where php.exe resides: php -v

For Linux: Type in the following at the command prompt: php -v

if you like to save some time you can use this program which has all of it in one install.
http://www.apachefriends.org/en/xampp-windows.html#641

All you have to do after the install is delete everything in the "htdocs" folder and then save all your work in that folder. takes barely any system resources. I personally downloaded the zip file cause it doesn't install. All you have to do is extract it to where you want to install it and that's it. If you've made a mistake along the way all you have to do is delete the folder and extract it again. It's all configured for you already.

Enjoy :)