!Choose ISO image file to install windows from

[debtobias]

I receive this error when I choose to install Windows XP from an image file. I am running Parallels 3.0 Build 5608. I am allowed to choose to load Windows XP Pro from the ISO so I click on WXPVOL_EN but none of the subfiles are bold and the Open option is faded out (unavailable). Any suggestions? I am using a Mac Book running Leopard.

 

[John@Parallels]

Probably extension is not correct, in Finder properties select show extensions, and check , or perform the same operations using Get Info