The install for SQLSRVREXP 2005, for Vista x 64 its SQLEXPR_ADV.EXE downloaded from http://www.microsoft.com/downloads/en/confirmation.aspx?familyId=b448b0d0-ee79-48f6-b50a-7c4f028c2e3d&displayLang=en

The first part of the installation is an analysis of the computer's configuration.

There was one warning. Opening the details shows:

• ASP.Net Version Registration Requirement (Warning) Messages
  • ASP.Net Version Registration Requirement
  • Failed to find the ASP.Net Version Registration with Microsoft Internet Information Services (IIS)

Anyone have any idea how to clear this up?
What is the ASP.Net Version Registration wiht Microsoft IIS mean?
And how would I fix this?

Thank you in advance.