Go to your settings on the Transformer, where you will see accounts and sync. You will see an option in the upper right hand to add a new account. Put in your hotmail email address and password, and you will then see an option on what to sync, and one option will be mail, which includes mail and contacts. You will also see that you can sync to many other account types that includes Tango, and Facebook, to name a few.
Sent from my Transformer TF101 using Android Tablet Forum