How to make a fixed style?
 

I have style, but i want it to have fixed with due to a lot of different monitor sizes. How can i do this? Also, i have used a fixed style but i want to edit the width of it, how can i also do this? Thanks.

To change the width of the default vbulletin skin, you would do it in Style Manager > select style > StyleVars > Main Table Width (pixels or percentage) . Put your width in pixels if you want it fixed.

Custom skins may require you to edit templates. You will have to ask them which templates to edit.