I use four PCs in four business locations and set up a skydrive folder/account so I could use the latest version of files whereever I was.  This worked really well for several months but last week I changed the password whilst at one location and now when I am at the other locations I can't see the latest files, and it doesn't ask me for a password.  How can I make it 'refresh' the password?

Further, in each location I can open a file, and resave it to the skydrive folder, but it is not accessible from elsewhere.  I am concerned that I have not understood the basic workings of Skydrive.  I had hoped that there was only one version of the file, stored in the cloud, which I accessed from whichever location, updated, and then saved back to the cloud.  I am now worried that in fact I have four machines, four folders, and four versions of the file, which had previously only been synchronising via the cloud.  This would be ok if only I could get the other machines to ask me for a password now the password has changed, as I expect that once it has the right password it will start synchronising properly again.

I am using Windows 7 on some machines and Vista on others.  In each case I downloaded the Skydrive app to the machine.

Thanks,

Dan