Hi Debbie,
Several Hotmail members are reporting this problem.
We need some more information to help come up with a solid answer to this problem.
Do you know what operating system and web browser you are using?
Example answers would be
Windows Vista and
Internet Explorer 7.
What happens if you maximize/restore your web browser?
Click the middle square in the top right of the browser.

In Internet Explorer, what happens if you change the text size on the page.
For example, change from medium to largest, or largest to smallest?
Please let us know if either of these actions fixed the scroll bar issue for you.
Thank you,
-Raymond