It seems thst you're right when you say that you cannot change the boot drive letter. It just struck me as odd, after the first install my drives were labelled in the traditional sense, C: HDD, D: first CD, E: DVD, then all of the smart card slots followed on. I turn on the machine the next day, all of the USB's take up C and up (no drives on these, one broadband modem and the other is a printer the other four aren't in use yet), my HDD is now I: It just seemed odd.
Thanks for all of your input and I guess I'm now running a system where I: is my HDD.
Cheers,
Jimmy