What htaccess browsermatch coding should I put up?

[magr]

I need help-advice to put a stop to someone that is spidering my site.
Also how can I stop someone using this software: http://www.spadixbd.com/backstreet/

I have an .htaccess at my main file manager (for banned members) and also at the www folder (password protection).

1. Which .htaccess should I code?
2. How and what do I code without blocking good browsers?

This is what I have now on the mainfile manager:
### CNC_START: BEGIN CUSTOM WEBSITE CONFIGURATION
Order Allow,Deny
Allow from all
Deny from **.**.**.235
Deny from **.**.**.230
Deny from **.220.220.109
Deny from ***.149.156.147
### DO NOT EDIT THIS SECTION, CHANGES WILL BE LOST
Options -Indexes
php_value error_reporting 5
php_flag display_errors off
### CNC_END: END CUSTOM WEBSITE CONFIGURATION


Thank you in advance for any help given.