IIS Setup R2 64 bit prompting for iisback.vbs

I'm trying to install iis using Windows Server Standar 2003 R2 64-bit. Add /
Remove components, Application Server.

The install is prompting for IISBack.vbs from the setup media. The only
instance I can find is iisback.vb_ in the AMD64 directory on the install disk
1.

Could that be the correct file even though it's in the AMD 64 directory?

I did install SP2 and Windows Updates prior to the IIS install.

Thx.