If you've modified any of the sample files be aware that the sample files will be overwritten in the installation - hopefully you will have created new projects in their own separate files rather than modifying the existing files. If not, make sure you back up these files first before installing the update.
After you've installed the new files over the shareware installation, make sure you:
You can do the following from the VFP Command Window in the Web Connection startup directory:
RELEASE ALL DELETE WCONNECT.APP DELETE FILE classes\*.fxp DELETE FILE *.fxp COMPILE classes\*.prg COMPILE CLASS CLASSES\*.vcx