Hi Claris,
To clarify, you are scrolling horizontally not because of the size of your monitor but rather the screen resolution that you've set.
I'll suggest the following two solutions to help resolve the problem:
a. If you are still seeing the vertical navigation on the left-hand side of the screen, this will cause the forum not to have sufficient space to display properly. In our current version of the forum, we've not included the vertical navigation. You may like to press F5 of button of you keyboard to "refresh" the page.
b. Alternatively, you may like to set your monitor to a higher screen resolution of 800x600.
1.Go to your Desktop screen. Do a right-click on your mouse. You should see a new small window. Click on "Properties" or,
Click Start, click Control Panel, click Appearance and Themes, and then click Display.
2. You should see the window below:
<center>
</center>
3. Click on the settings tab and drag the screen resolution slider to 800x600 or 1024x768 (if your video card is able to support).
<center>
</center>
4. Click apply.
That should help.
Regards,
Chin Leng.