Greg, I am having some success with MS via email. I had an issue a couple years ago and kept a copy of it.
I emailed the same guy at MS and we have been communicating regulary for the last couple of days. He has also told me that he would call me if I had trouble with the SP1 update.
I am still hesitant to procede with the download even though he encouraged me again to do it today.
The instructions and overview of SP1 indicate that the OEM be consulted before it is downloaded, to address possible issues with drivers after the install. He did admit that not downloading it would not be an issue, but he is sure high on me downloading this update.
See ya at the electrical forum.......John (J.V.)