Q for experienced blogger - blocking visitor IP?

Hi,

Hoping someone can help me. My hubby and I have a blog that we've had for about a year. It doesn't get much traffic, it's just a personal thing, not for profit. It's with blogger.

Lately we've been having spam comments. i have found a repeating visitor IP that i think is responsible, and I'd like to block it. But i'm not sure how?

I was reading somewhere about a javascript that sends chosen IP's to another address. I put it in but it didn't work. Does anyone have any other ideas?

Thanks in advance

 

i wil also be interested in IP blocking, but in WordPress blogs, not Blogger :|

thanks :/

 

I put this in my htaccess file to block IP's

order allow,deny
deny from xx.xxx.xx.xx
allow from all

 

thanks MarRome, but unfortunately there's no access to that in blogger. just the template i think?