I have a couple of newbie questions.. please be kind

> 3. Run the usenet.sql script.

How do I do that?
is it
mysql -uusername -ppasswd mydbname < usenet.sql

One thing that worries me is "... and adds some indexes and columns to existing tables."

Is it possible that there will be problems when I next time/in the future upgrade my vB when this hack has inserted new colums etc to existing tables.. for example if there will be new colums that go "on top" of these usenet-columns (yes, I know nothing about mysql/databases and I may be worrying fo nothing : )

Are there any other possible problems when upgrading to a new vB version besides need to modify all php-files again?

If i install this hack and want to remove it later what should I do?

or

If I install this hack but need to reinstall it after I have downloaded some newsgroups. What should I do to remove the existing news-messages so that I can start download them again?

Thanks!