Import Error

i got wordpress.2008-01-14.xml
i go to wp-admin/admin.php?import=wordpress&step=1
select my file ^ and push the import button.

and i get this:

Fatal error: Out of memory (allocated 19398656) (tried to allocate 1373 bytes) in /home/btour/public_html/web/wp-admin/import/wordpress.php on line 121

the file was exported from 2.2
the new wp is 2.3.2 ( fresh install )

how can i fix that ?
i also got a .sql backup of the old version.
and wich table should import to have back: categories, pages, articles, drafts, links