Uploading prebuilt site, SQL Import errors

I've created a drupal website on my local server, and want to upload it to webhost (HostGator). I've done:

(1) installed Drupal (they provide 6.9)
(2) updated to 6.10 (fine)
(3) reinstated custom modules - updated fine (now modules selection identical to my local version)
- during the above I carefully followed the steps outlined in the UPGRADE.txt that came with 6.10
(4) exported local database .SQL (whs.sql)

Now, when I tried to import whs.sql, I got the error:

ErrorSQL query:--
-- Dumping data for table `actions` -- INSERT INTO `actions` (`aid`, `type`, `callback`, `parameters`, `description`) VALUES ('comment_unpublish_action', 'comment', 'comment_unpublish_action', '', 'Unpublish comment'), ('node_publish_action', 'node', 'node_publish_action', '', 'Publish post'), ('node_unpublish_action', 'node', 'node_unpublish_action', '', 'Unpublish post'), ('node_make_sticky_action', 'node', 'node_make_sticky_action', '', 'Make post sticky'), ('node_make_unsticky_action', 'node', 'node_make_unsticky_action', '', 'Make post unsticky'), ('node_promote_action', 'node', 'node_promote_action', '', 'Promote post to front page'), ('node_unpromote_action', 'node', 'node_unpromote_action', '', 'Remove post from front page'), ('node_save_action', 'node', 'node_save_action', '', 'Save post'), ('user_block_user_action', 'user', 'user_block_user_action', '', 'Block current user'), ('user_block_ip_action', 'user', 'user_block_ip_action', '', 'Ban IP address of current user'),[...] (more coming)

MySQL said: Documentation#1062 - Duplicate entry 'comment_unpublish_action' for key 'PRIMARY'

I dropped and recreated that table, restarted the Import, then got error:

"SQL query:

-- -- Dumping data for table `blocks` -- INSERT INTO `blocks` (`bid`, `module`, `delta`, `theme`, `status`, `weight`, `region`, `custom`, `throttle`, `visibility`, `pages`, `title`, `cache`) VALUES (1, 'user', '0', 'garland', 1, 0, 'left', 0, 0, 0, '', '', -1), (2, 'user', '1', 'garland', 1, 0, 'left', 0, 0, 0, '', 'User Access:', -1), (3, 'system', '0', 'garland', 1, -5, 'footer', 0, 0, 0, '', '', -1), (4, 'system', '0', 'a3_atlantis', 1, -3, 'footer', 0, 0, 0, '', '', -1), (5, 'user', '0', 'a3_atlantis', 1, -10, 'right', 0, 0, 0, '', '', -1), (6, 'user', '1', 'a3_atlantis', 1, -9, 'right', 0, 0, 0, '', 'User Access:', -1), (7, 'comment', '0', 'a3_atlantis', 0, -11, '', 0, 0, 0, '', '', 1), (8, 'menu', 'primary-links', 'a3_atlantis', 0, -12, '', 0, 0, 0, '', '', -1), (9, 'menu', 'secondary-links', 'a3_atlantis', 1, -7, 'left', 0, 0, 0, '', 'Highlights:', -1), (10, 'node', '0', 'a3_atlantis', 0, -10, '', 0, 0, 0, '', '', -1), (11, 'user', '2', 'a3_atlantis', 0, -9, '', 0, 0, 0[...]

MySQL said: Documentation
#1062 - Duplicate entry '1' for key 'PRIMARY'

I know (almost) nothing about SQL; having said that, I'm wondering whether it would work to simply drop all the tables and re-run the Import. Would the INSERT INTO operations first create the tables if they're not found to exist?

If not, how should I proceed?

Thanks much for your help.