The subject PC has many hard drive partitions dedicated for different purposes, C: being a Windows XP system drive and F: (which is actually the next primary partition placed right after C: physically) being intended to host a newly installed Windows 7 instance (meant for "dual boot" configuration). Needless to say the intention was all the partitions to have exactly the same letters under both OSes, needless to say Windows 7 has detected all of them in a completely different order which would not be a problem (as the non-system drives letters can be changed easily after installation) if it wouldn't have named it's system drive C: (meant to be F:), which I have no Idea how to change.

Is there a way to set the letter you want? I don't mind reinstalling Windows 7 from scratch if it is to be set at installation time or even configured in some text files on the installation DVD.

I have tried this way, but it renders the Windows 7 system desktop unbootable (gets stuck on "Preparing your desktop..." after "Welcome").