Use the cxgames source rpcrt4.dll and it will install just fine. It will hang around 75% during installation for about 10 minutes and then finish if you monitor the terminal you'll see it working slowly. I have tried Zach's way and here at Wine-Review we continue to use CX's rpcrt4.dll. Additionally for full MS Office 2007 usability CX Office Pro 7.0 will be out very soon, as in 1 week, granted there are no hold ups. I can tell you first hand that it is very promising as I am on the beta team.
