64bit systems, new OSs, Windows 2008 R2 & c.
Installing old version software (not yet released for IIS7 
) you might have to double-check installation manually … if product’s support team send you manual installation procedure. 
On your step to a complete and fully functional installation, you may encounter this message: Could not create a Disk Cache Sub-directory for the Application Pool.
These links may help you
Resolve ASP Error: Could not create a Disk Cache Sub-directory for the Application Pool
DCPROMO does not retain permissions on some IIS folders
source: Could not create a Disk Cache Sub-directory for the Application Poo
“The Template Persistent Cache initialization failed for Application Pool” on IIS 7 using Classic ASP
Technorati tags: IIS, Windows, x64
