Questions about using Bitlocker without TPM

We currently use Bitlocker to encrypt our Windows 7 computers with TPM. Now we are looking at encrypting some Windows 7 computers without a TPM. I see how to change the group policy setting to allow Bitlocker without a TPM. I have looked at a lot of other
threads and I have a few questions about how the Bitlocker without TPM works.
1) I see a USB drive containing a key is required for Bitlocker configurations without a TPM, say the end user loses this USB drive, what are the recovery options for their computer? 
This article seems to indicate that without the USB drive connected, you are unable to even access recovery options http://blogs.technet.com/b/hugofe/archive/2010/10/29/bitlocker-without-tpm.aspx
We have recovery backed up to AD when Bitlocker is enabled, but how could we do this recovery on a computer on computer where it's USB is lost? Would we have to remove the HD itself and attach it to another computer to access?
2) After enabling Bitlocker on a computer without a TPM and using the USB Drive for the key, is there a way to also add a PIN or password protection at bootup?

Hi,
Sorry for my dilatory reply, 
Configuring a startup key is another method to enable a higher level of security with the TPM. The startup key is a key stored on a USB flash drive, and the USB flash drive must be inserted every time the computer starts. The startup key is used to provide
another factor of authentication in conjunction with TPM authentication. To use a USB flash drive as a startup key, the USB flash drive must be formatted by using the NTFS, FAT, or FAT32 file system.
You must have a startup key to use BitLocker on a non-TPM computer.
From: http://technet.microsoft.com/de-de/library/ee449438(v=ws.10).aspx#BKMK_Key
For more Q&A about BitLocker, you can refer to the link above.
hope this is helpful.
Roger Lu
TechNet Community Support

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