Getting Blackhole Toolkit Malware - How do i fix this?

I host the website whitneyzielke.com but just recently norton has been detecting a blackhole toolkit 11 everytime I go to the site.  How do i fix this?  I worry that others going to my site are getting infected as well.  Below are the suspicious attack messages i've been provided by, Google and Norton,

 

From Norton,

 

IPS Alert Name: Web Attack: Blackhole Exploit Kit Website 11

Default action: No Action Required

Action Taken: No Action Required

Attacking Computer 193.39.78.203

Attacker URL nuxjcwao.sexxxy.biz

 

From Google,

 

Of the 2 pages we tested on the site over the past 90 days, 2 page(s) resulted in malicious software being downloaded and installed without user consent. The last time Google visited this site was on 2011-11-25, and the last time suspicious content was found on this site was on 2011-11-25.

Malicious software is hosted on 1 domain(s), including xpqnwqn.ninth.biz 

This site was hosted on 1 network(s) including  AS15344 (ADDD2NET)  

 

can someone please help me fix this?  Is there code that i need to remove from my site that was somehow added?

 

thanks,


Derek

 

 

 

[edit:  Clarified subject.]