Originally Posted by
Starman
If you need to view upgrade availability frequently, I strongly recommend the KVS tool. There's a modest fee, but it's just a few keystrokes then -- easily five times faster than united.com, esecially if you want to examine lots of different city pairs, dates, etc.
I, too, heartily endorse KVS Tool (
www.kvstool.com) which I count as one of the best travel tools I've ever used.