backup file not importing

[ajk]

When I recently changed hosts, I started having MySQL problems.

The file I backed up from the old BBS version 2.3.2 was 147MB size file.
This file is called vbulletin.11.15.sql. When I logged in as root, I post these commands:

mysql -u username -p vbulletin < public_html/forums/backup/vbulletin.11.15.sql
Password: (I then enter the correct password.)

Then it goes back to the command prompt. It doesn't import the data base back in.

When I used the import command from the phpMyAdmin query window from a different attempt, it fails too.
In Internet Explorer 5.0 I get the error page can not be displayed.

I'm also wondering if there is a hack to install into the 2.3.3 control panel to import .sql backups.

Thanks to ANYONE for ANY help.