set the width of the quick quote box?

[dreamhost]

I cannot seem to find where to edit the config file to manually set the width of the quote box when displayed inside a thread.

This one may be a little hard to describe but I will try.
When I want to reply to a thread and click the quote button from another post, and type in what i want, the new thread does display just like it does here, where you have the quoted info in it's own "box" in the thread.
My problem is that quote box is to wide so it gets cut off.
example thread post #7
http://www.annointed.net/pn_vb.php?p...d=1#post132439

I realize part of the issue is my theme is set to a max of 800pix where most vb sites dont do that, but there has to be a way around this issue.

any help would be appreciated.

thanks