user3905: It is just numbers and letters? I have transferred my bitcoin address and want to use the key so I can move my coins from this wallet to another? As you may be aware there site is down but can I set this up on another wallet so I can still get my coins?

user153: No, Instawallet is a hosted (shared) EWallet.  
They do not provide to you the private key for the deposit addresses associated with your Instawallet.
When you request a withdrawal, Instawallet processes that request and makes the transaction.  There is no way for you to create a withdrawal transaction yourself for any funds in an Instawallet.

3905: <p>It is just numbers and letters? I have transferred my bitcoin address and want to use the key so I can move my coins from this wallet to another? As you may be aware there site is down but can I set this up on another wallet so I can still get my coins?</p>
 153: <p>No, Instawallet is a hosted (shared) EWallet.  </p>

<p>They do not provide to you the private key for the deposit addresses associated with your Instawallet.</p>

<p>When you request a withdrawal, Instawallet processes that request and makes the transaction.  There is no way for you to create a withdrawal transaction yourself for any funds in an Instawallet.</p>
