B2E was working great for me, but now I am trying to reinstall it after changing the domain name of my site. I (think I) have wiped everything clean by deleting my old database and user before reinstalling B2E in a new directory. I'm a noob here and I don't know what I'm doing with SQL or PHP, but I can follow directions pretty well if someone can point me in the right direction.

At the beginning of the installation I get the following message even though I don't see that a .htaccess file exists:
Preparing to install .htaccess ... ERROR!
You already have a file named .htaccess in your your base url folder.

The installation halts with the following message:
Fatal Error: Class 'SQL' not found in .../_groupsettings.class.php on line 67.

Line 67 reads:
$SQL = new SQL();

It looks to me like I should be looking for a SQL class constructor, but I don't know. I understand C pretty well, I understand a little C++, but I don't understand what's going on here in PHP. Any suggestions?

Thanks -
Dave