To execute, get to the Windows recovery environment using Startup Repair or a Win 7 cd, mount truecrypt using UBCD4Win (or perhaps from a flash drive may be easier) and run that command above on the letter drive you've selected to mount on.
Based on what I have read (I haven't tried it myself) when you download the truecrypt file to your local machine, you should be able to mount it there and would be prompted for password. Once mounted, you should be able to write to or modify to your hearts content and then save to the encrypted volume you local machine. You will not be able to save the changes into the original server-based volume as that file is 'read only'. However, you should be able to save your modified volume to the server under a different file name.
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