Meeting Requests/Exchange ActiveSync

[hgo]

I can not get meeting requests I accept on my treo 700p to appear in the treo's calendar. I can accept the appointment, the email will go back to the meeting organizer, and the appointment will appear in my outlook's calendar as well as the organizer's (as accepted), but will not show up on the treo. I have tried manually syncing the treo's calendar after the appointment shows up in the outlook calendar, and it still doesn't work. I am using exchange activesync, and everything else works just fine – this seems to be the only bug. I've used versamail and chatteremail, and have the same problem with each. My exchange server is mailstreet. I'd appreciate any suggestions, or even knowing that this just won't work. Thanks!