Doc - I called yesterday and had them reenter my WorldPerks number. As it turns out, I had purchased the tickets before I'd even reached silver elite.

I checked again today; I have not yet been upgraded to Gold. I called the WorldPerks center - the fellow I talked to told me that he thinks that the computer scan for upgrades happens ever two to four weeks. (It's a good thing that we hear from MJW what really happens). Anyway, he also said that because I'm not a gold, he can't upgrade me to first class today (it's two days before the flight). There are now only two first class seats available on the flight from MSP to YVR so I'll be pretty lucky to get one but we'll see.

Of course, if the scan occurs tonight and I become a gold tomorrow (Friday), I've got a better chance than Saturday, the day of my flight.