sorry not to have been able to reply earlier, I am still on the move in Europe and have only just reached a decent internet connection after being spoilt with LAN and wireless network access at the MoodleMoot in Oxford (many thanks to Sean Keogh and Liz Polding for their superb work in organizing the conference)
Anyway, getting to your immediate problem you need to find a version of the HotPot language files and put it in the "lang/en" folder on your Moodle site. In case you can't find one, I have attached one to this message.
After putting the attached "hotpot.php" file in your "lang/en" folder, you will need to log in as an administartor to your site and visit your "admin/index.php" page, at which point Moodle should detect the hotpot module and install it by creating the necessary database tables.
FYI, the README.TXT file assumes the existance of a couple of sub folders called "lang" and "pix" but these don't seem to have been included in your download. Curious
Please let us know how you get on
Adding HotPot to v1.5 Moodle...
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