MS Office 2007 Installation error

[Maya_the_Bee]

I've tried to install MS Office 2007 but keep getting a "setup cannot find Powerpoint.en-us\PptLR.cab. Browse to a valid installation source, then click OK." error message.
I can see the file on the installation disk and I can open it, but setup doesn't "SEE" it.
Can someone please help ?
I hope I don't need an Idiot's Guide . . .

[Random717]

Is the disc scratched at all? Try copying everything on the disc to a folder somewhere and run the installation from there.