Grab list of Stats, Application Data, and Serials off OSX 10.6 to prepare for reformat and fresh install? I need to reformat my 2007 OSX as it is now returning kernal errors. I want to install everything fresh but I have a lot of software and don't want to sit here making a list of everything installed as it is all unorganized.

For windows I usually accomplish this with Belarc Advisor: http://download.cnet.com/Belarc-Advisor/3000-2094_4-10007277.html?tag=mncol;1

Is there something similar, whether a method or an app that will allow me to do this on a mac?
Most of what you need (i.e. hardware, network information, software etc. thats similar to what Belarc Advisor returns) can be obtained using the built-in System Profiler application (/Applications/Utilities/System Profiler.app). 

You can then export the information to a file using File ➔ Save As.., then select either "Plain Text" or "Rich Text Format" from the "File Format" dropdown.

The above can get quite verbose, so if you just want a quick snapshot of installed apps (including those installed by default, of course), you could start the Terminal (/Applications/Utilities/Terminal.app) then type

ls /Applications 

or 

ls /Applications &gt; ~/Documents/apps.txt to send the output to the file apps.txt in your Documents folder.