If you are telling the host to turn off a rule you do not have access to it implies that the problem is not with Admin Tools (to which you of course have access to) but rather the mod_security2 rules installed on the web server itself (to which only the host has access to).
The host will be disabling the offending rules by adding something to the end of of the .htaccess file. The next time you are generating the .htaccess file through Admin Tools' .htaccess Maker the file gets overwritten, therefore the lines your host added will be lost. Hence your need to ask your host to repeat that every time.
As documented since September 2010, you can add these lines to the .htaccess Maker's “Custom .htaccess rules at the bottom of the file” section. If you do not know what the lines you need to put there are, ask your host. Every time you regenerate the .htaccess file through the .htaccess Maker feature these lines will be appended at the end of the file, therefore you will not have to go through your host again.
Watch out! That these lines will most likely be different from one host to the next and possibly different from one server to the next even on the same host (depending on how each server is configured). Do not try to copy the lines from one site to another; it will probably not work.
Nicholas K. Dionysopoulos
Lead Developer and Director
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