Unzip and run the file rcxxx to install romcenter on your computer. You can safely install this version over an old one.

You can get new versions and more datafile at www.romcenter.com
If you have any questions, problems, bug report etc... please visit the discussion forum at www.romcenter.com

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Installation info:

RomCenter is a 'clean' application, it does not spread files across your windows system folders.
User datas are stored in the (hidden) 'windows application folder' (usually C:\Users\<yourname>\AppData\Roaming\romcenter\).
You can change this folder by editing the startup.ini file in the main romcenter folder and Moving the 'user datas' to the new location.

Dll are installed in the application folder. Settings are saved in an ini file.
Registry is not used.
Windows folder is not used.

RomCenter install process do the following action:
 - create and install files into your romcenter folder (specified in installation wizard)
 - create and install files into your user app folder
 - create a shortcut into the windows start menu and the desktop
 
Installation file is built with the freeware 'inno setup compiler' by Jordan Russel (www.innosetup.com).