ActiveSync works but having trouble pulling Calendar items up to P

After seeing all the post of people having a heck of a time with Active Sync

and Vista, I'm feeling happy with 90% of what does work for me. However,

please help me figure out why my PDA calendar items won't upload into my

Vista PC's outlook app.

Currenly all my contacts came in, Tasks came in, Emails fine, and I can

enter a calendar item on my Vista PC and it will sync down to the PDA. But

again NOTHING in the PDA calendar will go up to the PC?

Additionally I have had this same PDA synching well with a WIN2k Laptop and

I'm wondering if that might be the issue - that the old laptop is somehow the

"master" and the new Vista PC is subordinate or something weird. Thanks if

anyone can help.