You can move the Dropbox path wherever you like. Dropbox doesn't default to the Desktop either. It's normal location on a regular Windows 7 machine is "C:\Users\<username>\Dropbox"

I have another machine (carpc) with an entire drive D:\ as the Dropbox store (selectively taking parts of the above Dropbox store)
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Christian
#40104192 120Gb (no longer in my E36 M3, won't fit the E46 M3)