Great rates. Freedom from being connected to the computer. Good idea.

It's quite easy:

• Click Forward... at the top of your Messenger window.
• Next to "Forward incoming calls to:", click Add a Number, and follow the steps to activate the number to which you'd like to forward calls.
• Once you've activated call forwarding, you do not need to be signed-in to Messenger to receive calls. In fact, your computer can be off completely.
• Note: You'll incur Phone-Out charges when Messenger phone calls are forwarded, so you'll need a Phone Out account. Calls forwarded to landline phones won't incur an additional charge, but calls forwarded to mobile numbers may count as minutes used, depending on the plan you've purchased from your mobile carrier.