Send coins from another adress Newbie here!

I need to confirm something:
I have bought bitcoins and I already see them in the QT client I am using.
I now want to send the bitcoins using a different address than the one I use to receive them.
Do I have to send the bitcoins to another address and only then send them again to the final destination?
Thanks!
Yes.

You can only spend bitcoins from the Address they were sent to. Think of it like cheques - only the person they are written out to can authorise them - not their spouse or child. Bitcoin transactions operate similarly.