Anne wrote in diccusion list about bat here http://crossover.codeweavers.com/pipermail/discuss/2004-April/006447.html
"The other problem is in resizing columns - under Windows one can
simply pull the header bar sideways to increase or reduce the
column width and all the items in the column are resized with it.
Under CO, the header is resized but the column below it stays the
same size, so all the column contents are offset from the header.
The only way to make them stay the changed size is to go into the
fake windows folder and manually edit the sizes in the fake
registry file, but they don't always stay as set."
The answer is pretty simple. To succesfully change width of a header and a column you need to make right click with mouse on header and choose "Setup columns". Then you can change and apply new width for any column.