Mark;
That error usually comes up when you attempt to install a 64 bit
application/patch on a 32 bit computer.
You have a 32 bit computer so you need the 32 bit patch.
The other cause is a bad download.
Download it again.

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Jupiter Jones [MVP]
An easier way to read newsgroup messages:
http://www.microsoft.com/windowsxp/pro/using/newsgroups/setup.asp
http://dts-l.org/index.html
> I tried downloading KB823182 security update from MS
> website. Got an error that read:
> update\update is not a valid Win32 application. Please
> help. Thanks for responding so soon, Eric...
>
> Mark