File read error in pdfs

[Guest_imported]

I am relatively new to using acrobat.

I am creating pdfs (from Quark) for distribution on our intranet and internet. The pdfs I create can be viewed in IE. When the file is saved within IE and I try to reopen the pdf I get a 'file read error'

Is this beacuse IE has saved the file in another format (eg html), rather than as a pdf?

Does anyone know of a way around this when creating the pdf, or is the only way to ask people to 'save target as'?

thanks