Upgrade complete. Went well. I was even brave and used my Boxwave Minisync cable to do it.
(Boxwave URL:
http://www.boxwave.com/products/mini...g-i600_111.htm)
Running windows mobile 2003 now. One thing I can say for sure is it is much faster with response alone.
P.S. Took every bit of 4 minutes for my phone to come up at the end of the upgrade after removing and reinserting the battery. Don't worry like I did.
Fred