blocking a whole country from accessing a site

How can I do this

[benevolent001]

hi
can u please is it possible to do this
i want that no body from particular country should be able to view my website,people from other should be able to do so.
i have tried to use IP DENY manager in fantistco,any suggestions
regards

[kodaks]

This may help if you are using Apache:
[webmasterworld.com...]

[benevolent001]

i have access to htaccess file but this post is so confusing?
can u tell me what shd i wirte in it to block particluar country?