Yes you can set whatever width you wish in admin layout options or in whatever table your loading in the header depending on how your limiting the size.
Many thanks for the reply Chuck.
The Main table width is already set at 100% - if I increase that I simply lose part of the right hand side of the frame.
Brian.
Chuck...
Resetting the table width of the header increases the width of that OK.
After that, resetting the Main Table Width does that but the right hand side of the table and the text within it are not viewable.
Brian.