I bought a Microsoft Surface and love it.  Here's my problem:  I create files in Microsoft Word and password protect them.  I use my SkyDrive as a backup in case something happens to my surface (stolen, lost, broken, etc.).  The snag is, if anyone gets on my computer and hits the SkyDrive button all the password encrypted files instantly open without asking for a password.  What's the point in having a SkyDrive backup if I can't password protect them? 

Is there a way to password protect either the file I save to SkyDrive OR access to the SkyDrive from my Surface?  For instance, if someone tried to access my SkyDrive from my Surface, is there a way to password protect access to even get on my SkyDrive? 

And if not, can anyone recommend a service I can store my files on that's like SkyDrive?  From reading other answers it seems that Google's version of cloud storage can't password protect access to files either.  Thanks in advance for any help.