It sounds like the search would need to run on the web server but you can do that without actually installing FileLocator Pro on to it. Install FileLocator Pro portable to a network share that the web server can see (or a USB drive) and then run the search from the web server either using the GUI or the command line, e.g.
\\Server\Apps\FLPro\FileLocatorPro.exe MySearch.srf -o "\\Server\Results\Search1.txt"
If you're using Remote Desktop Connection and allow access to your local drives during the session you can run the program straight from your local drive:
