Dropbox Help

I am not sure if I should be posting this on here or in the Calibre Forum, but here goes anyway.

I have just installed Dropbox and I am having trouble with the location of my Calibre Library backup.

I dropped Calibre Library into Dropbox and now is doesn't show up under C:\users\Patrick\Calibre Library as previously. I now have a Dropbox folder and can get to Calibre Library that way but previously it would come up under Users etc. I think previously it was also under Documents. Can anyone advise what the hell I have done please?. How can I get back to normal?. I have put this in the Calibre Forum also.