Some simple fixed might be to narrow the columns by either unchecking "show cell margins" in the customize style tab or to rotate the column headers 90 degrees and stretching them in height and then minimizing the summary cell width. Otherwise, the only way to make the crosstab "wrap" is to create groups based on ranges for the column field (it helps if you have a standard number of columns or at least one with sequential values), and then move the crosstab into a group section.
-LB