Using Access 2007 with ASP.net

[WMXTeam]

I have a small ASP.NET 2.0 application that I use on my local XP machine running IIS 5.1. The app uses an Access Database. I am trying to update the application to use an Access 2007 database. I have installed the Microsoft Office Access Database Engine, and changed the connection string to use "Provider=Microsoft.ACE.OLEDB.12.0;", but am getting the " 'Microsoft.ACE.OLEDB.12.0' provider is not registered on the local machine." error.

I have tried uninstalling and re-installing the engine, but it made no difference.

Does anyone have any ideas? How can I check to make sure the provider is registered?