Need help writing an Irule for a CSS to F5 migrationi

When you say redirect, do you mean that you want to send an HTTP Redirect to the client to point to the actual server? ie the server is not located behind the BIG-IP, the BIG-IP is just doing smart redirecting?

Or maybe the BIG-IP redirects to the new URL on a different VS on the BIG-IP that then load balances to pool A?

From your original post it seems that what you want to do is look at the incoming URI and if it contains X then send to server A and modify the URI to be XYZ.

In pseudocode this would be:

when HTTP_REQUEST

if HTTP::URI contains "thelinkrpts"
 then   
        pool A
        URI replace with "/businessobjects/enterprise115/InfoView/default.htm"
elseif HTTP::URI contains "infoview"
 then   
        pool B
        URI replace with "/businessobjects/enterprise115/InfoView/default.htm"
else
        pool C
endif