I installed a new ROM but lost all my contacts! Urgent!

[Icedgreece]

I went through Windows Mobile Device Center, synced all my settings before I installed a new Rom, but now it's all gone!?

Please help, I had over 200 contacts and important events!

I also did a "Microsoft my phone", and I can access it, but I have no idea what do to with it.

Thank you.

..sorry if I sound 12. This is urgent. Many Events were stored for work.