Auto Sync two treo's each night? Wireless

[hetch3]

Hi,

My wife and I just bought Treo's 700wx with the hope of being able to syncronize our calandars. Specifically is there a way to have the phone automacailly sync to each other via bluetooth at a pre set time..say each night? I would like my calandar changes to sync to her phone and then her changes sync to mine or something to that effect? I'm running Vista with Verizon service and it's my understanding the wireless sync software does not support Vista yet (how nice!) The only other way I "think" it's possible is for one of use to maintain a calandar on our pc outlook and then we each manually (with a wire) sync to that. Is that even possible? It'll be a pain for sure....not to mention we each have seperate windows user names.

Does anyone have any thoughts as to what the best way to do this is? Thanks in advance!

Kyle - Columbus Ohio