Daylight Savings - messed up appointments?

[jcarbary]

I don't know how to make my appointments show with the correct time, and I can't seem to adjust my time zone correctly.

Bear with me ... this is sort of the chronology of events....

* I downloaded the microsoft DST .cab. After the whole process was complete, all of my appointments after March 11 showed up one hour later on my Treo. I worried this would mess up my sync at work, which I sync to my GroupWise calendar.

* I noticed that my timezone was Indiana, because I had enabled "detect network time." (I'm in the Detroit area, which isn't the same; I should be Eastern U.S.) I changed it to the right zone, but that didn't resolve the issue with appointments after March 11.

* After freaking out, I loaded a backup file from before I downloaded the cab.

* I then changed my timezone to the Eastern US, and disabled "detect network time." (No DST update .cab installed.) All of my appointments after April 2 are now one hour late. If I sync with my GroupWise this way, it'll be all messed up on GroupWise.

* Confusing, perhaps related: recurring events after March 11 are showing up duplicate on my Treo, but not on my GroupWise calendar.

I guess the questions are:
1) Is there any way to adjust my timezone so that it shows correctly, without adjusting the time for all of my meetings?
2) Is there a way to download the DST .cab without it adjusting the time of my appointments from March 11 on? This is going to mess with my work computer when I sync. (I can just see multiple meetings at multiple times and not know what the heck is going on.)

I'm leaning toward just waiting for March 11 to come and figure it all out then. I'd rather be proactive and try to fix it now, if at all possible.

(By the way, wiping the calendar and starting the calendar from scratch with a sync to work is a possibility, but not desired - - our computers don't like the WM5 and syncing works today. May not tomorrow.)

ANY help is appreciated!
jen