Question on accessing Time Machine files....

Windows can't read the Mac OS X Extended file system natively. You'll need a separate piece of software for that.
But if you just need a simple file, it might be easier to use a USB thumb drive or File Sharing to transfer it.

 

Windows cannot read OS X's file system.

You'll have to use either a thumb drive or something else to transfer your file.

You can have the time capsule act as a shared network area storage, though again, I'm not sure a PC will be able to read from it.

I have one at home and both PC's and macs, I'll try and remember to check if the PCs can browse my TC.

 

My PC sees it as a NAS. Can't login to it as my credentials aren't setup. I'll try and find some time to check that out.

 

Time Capsule works fine with Windows. I backup a Windows PC to one.

I don't think you can read the Mac backups but you can create a folder that both the Mac and Windows can access.