Make Cognos Connection Unavailable during nightly ETL Run

[camhei]

Hello!

We'd like to make Cognos Connection unavailable during our nightly ETL cycle.  We use Cognos 8.3 and the Data Manager product.  Ideally, we'd like to have a little splash screen that says "Cognos Connection is Unavailble.  Try back later" if the user tries to access Cognos Conenction during our Data Manager job.  Does anyone have a straight-forward technique that they could share?

Thanks for your assistance,
Camille

[Grim]

Really simplified...
Replace the index.html or default.htm (depending on your webserver) with the maintenance mesage.

<cognos>\webcontent\index.html
<cognos>\webcontent\default.htm