A few of my own personal tips
If you dont like them, you can just tell me to go away.
The error that you were getting about the directory not being available. Very easy fix. My own personal preference is to use the terminal for as much as possible. I was once an avid windows user, but found that using the terminal, things go soooo much faster. It is so much easier to type mv <filename> <destination> than to open up 2 different windows and then highlight and drag, so much faster and cleaner.
to create your directory in a terminal, just do this:
Password: <your password>
# cd /mnt
# mkdir windows1
I would then change permissions so that you can read and write to the directory with a user other than root. To do this you should
# chown <your user name> /mnt/windows1
# chmod 744 /mnt/windows1
If you want other users to be able to access this drive, then you can adjust accordingly, just look up some basic info on permissions and you will be set.
Also for the terminal, I do this to make easier browsing. in /home/<youruser>/.bashrc under the alias section put this
alias l='ls -lh --color=tty'
This makes it so you just have to type l instead of ls -lh every time you want a file listing.
Hope this helps, and let me know if I can help any more