Size,posts and access denied

I have 3 problems:
1)As others have asked, how do I re-size the window without minimising every time?
2)After accessing my computer from another a few times, it suddenly stops allowing access and says page not available.
3) When trying to receive posts or messages etc, MWS automatically appends the post directory onto the end of the message directory, thus creating an invalid new directory.
Anyone help???