While trying to load new software get message Windows
Installer cannot be accessed. have done lots to redo it
but I believe I have a corrupted file. How can I replace
it?

If you search for the exact phrase:

Windows Installer Service could not be accessed

here

http://support.microsoft.com/default...;EN-US;KBHOWTO

you'll see articles that might help.
--
Phil Wilson [MVP Windows Installer]
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"GB" <(E-Mail Removed)> wrote in message
news:5a0a01c42d44$b9d18a80$(E-Mail Removed)...
> While trying to load new software get message Windows
> Installer cannot be accessed. have done lots to redo it
> but I believe I have a corrupted file. How can I replace
> it?