When I install it on IIS it did not create virtual directories under Default Web Site, so we did create those directories manually:
1. Directory name is "jacarta" and local path is - .\Novell\connector\bin
2. Directory name is "webaccess" and path is - .\Novell\tomcat5.5\webapps\gw
So there are a couple other tricks - recopy images and templates after applying of service packs, but I will documented it at my next installation.