Hi, acturbo.
You mean installing WordPress on IIS server, right?
I don’t have that environment and I’m not sure if it is possible or not.
The document in the codex Installing on Microsoft IIS says you can install WordPress on IIS. But I don’t have no more information to help you.
I’ve only checked the XAMPP on Windows on the local machine: Apache, PHP, SQLite library and PHP PDO extension. On this environment, WordPress + SQLite Integration works fine except patch.exe which needs some workaround concerning UAC.
If you run PHP on Windows, you’ll have to enable some library and extension. Check your php.ini file:
extension=php_pdo_sqlite.dll
extension=php_sqlite3.dll
This is required for using SQLite.
No warranty, but you can try it. Good luck!