I use a nice little app call listmaker.  it scans the folders yopu point it at...all my runtimes are in a folder called "poser stuff"

And things i haven't yet installed are in a folder called "poser downloads"

I point list maker at those and it makes a text file..which is searchable use "find".

does the trick and shows the exact path of the file you want.  Of course you have to do a bit of organising before you start...putting files into folders called....animals, girls, boys etc.

give it a whirl

http://www.novatone.net/software/ListMaker.htm