Here are instructions to sync your TP2 to hotmail.
Setup your phone to sync your Hotmail inbox, calendar and contacts using ActiveSync
Once you do that your WP7 will pull your information from your hotmail account. If you have duplicates you can join/merge them together in hotmail.
Also, even though there is not a "myphone" like before...
www.windowsphone.live.com is pretty sweet. In there you can remotely lock your phone, remotely ring your phone (even if on silent), remotely wipe your phone, and remotely track where your phone is via GPS on any desktop. If you lose your phone you can lock it and ring it remotely and put a message on there giving instructions on who to call if found as well. And it is all FREE...